OROMIN Suite 2000, Guinness Tower, 1055 West Hastings Street, Vancouver, B.C.

Canada V6E 2E9
EXPLORATIONS LTD.

Tel: (604) 331-8772 Toll-free (877) 529-8475
Fax: (604) 331-8773 E-mail:
April 13, 2010 Trading Symbol: TSX - OLE
OTC/BB - OLEPF
Web Site: www.oromin.com
DRILLING EXTENDS KOUROULOULOU GOLD DEPOSIT TO
300 METRE DEPTH AND EXPANDS MAKI MEDINA DEPOSIT
HIGHLIGHTS
KOUROULOULOU DEPOSIT (Golouma Style Higher Grade Deposit)
o 64.56 g/t gold over 4 metres in DH-622 is the deepest drill intercept to date at
this deposit
MAKI MEDINA DEPOSIT (Masato Style Bulk-Tonnage Deposit)
o 1.51 g/t gold over 25 metres in RC-672 extends near-surface mineralization
northward beyond previous drilling
o Drilled surface extent of Maki Medina mineralization expanded 400 metres to
1,600-metre strike length and remains open
SEVEN DRILL RIGS FOCUSED ON RESOURCE EXPANSION
Oromin Explorations Ltd.

("Oromin"), on behalf of the Oromin Joint Venture Group Limited
("OJVG"), is pleased to provide a drilling update on its ongoing exploration and resource drilling
program at the OJVG Gold Project in eastern Senegal, West Africa.
Geotechnical and hydrological drilling required for the independent full feasibility study is complete.
All drills on site are now focused on resource expansion drilling.

Oromin currently has seven drills
- four diamond core drills, one reverse circulation (RC) rig, one combined diamond core-RC drill
and one rotary air blast ("RAB") drill - operating at various deposits, targets and prospects within
the OJVG Gold Project.
The following results from the Kourouloulou and Maki Medina deposits represent the initial drilling
results from our 2010 resource expansion campaign.
KOUROULOULOU DEPOSIT
Kourouloulou is a Golouma Style Higher Grade Deposit located approximately 500 metres north of
the Golouma South Deposit and 1,000 metres south of the Kerekounda Deposit (two of several other
Golouma Style Higher Grade Deposits).

Initial resources for this new discovery will be included in
Page 2 of 4
the feasibility study report scheduled for public release in early July.

Kourouloulou is comprised of
two principal, sub-parallel gold veins traced to date by drilling across a 220-metre strike extent, and
currently to a depth of approximately 300 metres.

The deposit remains open to expansion to depth
and to the west.
Of the recent significant results at Kourouloulou, drill hole DH-622 (64.56 g/t gold over 4 metres)
represents the deepest intersection to date made up of four consecutive 1-metre samples returning
104.10 g/t gold, 55.08 g/t gold, 4.87 g/t gold and 94.20 g/t gold from 278 to 282 metres as set out in
the table following.
Kourouloulou Deposit
Drill Hole
Grid
Co-ordinate
Azimuth/
Dip
From - To
(m)
Interval
(m)
Gold
(g/t)
DH-621 53500N/5345E 030/-65 128-138
incl.129-133
242-246
incl.245-246
251-252
10
4
4
1
1
5.84
12.63
7.49
28.07
71.14
DH-622 53472N/5325E 030/-65 278-282
incl.278-279
279-280
280-281
281-282
4
1
1
1
1
64.56
104.10
55.08
4.87
94.20
RC-665 53558N/5481E 030/-50 84-90
incl.84-85
and 89-90
6
1
1
20.59
35.32
82.46
RC-667 53479N/5363E 030/-70 160-162 2 26.67
RC-668 53501N/5370E 030/-70 130-131 1 4.63
Mineralized intervals are based on 1-metre continuous samples utilizing a 1.0 g/t gold cut-off level with a maximum
continuous internal dilution of 2 metres.

No cutting of gold assays has been employed for reported intervals.

The
attitude of mineralized intervals varies and reported mineralized intersections may not represent true widths.
MAKI MEDINA DEPOSIT
Maki Medina is a Masato Style Bulk-Tonnage Deposit on trend with two other deposits of this type,
Niakafiri Southeast and Masato.

Maki Medina is located 2.0 kilometres southwest of Niakafiri
Southeast and 5.5 kilometres southwest of Masato.

Recent drilling has extended Maki Medina"s
strike length by 400 metres to 1,600 metres, and to an average depth to date of 100 to125 metres.
The deepest intersection is approximately 200 metres.

Maki Medina remains open to potential
expansion along trend to both the northeast and the southwest, and also to depth.
Drilling activity at Maki Medina is focused on near-surface, saprolitic-oxide mineralization
amenable for processing at a higher mill throughput rate, similar to near-surface gold mineralization
at the Masato Bulk Tonnage Deposit.

An excellent example of this is recently drilled step-out hole
RC-672 which intersected a 25-metre interval of soft saprolite-oxide mineralization grading 1.51 g/t
gold from 14 to 39 metres.

Recent significant results are set out in the table following.
Page 3 of 4
Maki Medina Deposit
Drill Hole
Grid
Co-ordinate
Azimuth/
Dip
From - To
(m)
Interval
(m)
Gold
(g/t)
DH-631 53734N/1938E 110/-70 176-183 7 2.87
DH-634 536581N/2060E 110-50 27-33
incl.29-30
6
1
4.63
12.43
RC-670* 54162N/2148E 110/-55 6-27
incl.8-12
21
3
1.12
4.46
RC-672 54200N/2162E 110/-50 14-39
incl.14-29
25
15
1.51
1.98
RC-673 54108N/2069E 110/-55 50-57
incl.53-55
7
2
1.17
1.60
RC-674 54088N/2122E 110/-55 18-24
incl.22-24
6
2
1.49
3.85
RC-675 54053N/2091E 110/-55 14-17 3 1.76
RC-678 53898N/2061E 110/-50 42-47
incl.44-46
5
2
2.14
4.72
RC-679 53890N/2085E 110/-50 15-24 9 1.28
RC-681 54078N/2023E 110/-55 72-78
incl.75-77
6
2
1.81
3.34
RC-682 53802N/2089E 110/-50 5-15
incl.9-14
27-36
incl.27-29
10
5
9
2
1.64
2.89
1.57
4.00
RC-685 53751N/2005E 110/-60 86-89
123-128
3
5
1.48
1.33
RC-687 53724N/2080E 110/-50 50-55
incl.50-51
5
1
1.44
4.96
RC-689 53699N/2032E 110/-55 60-74
incl.63-70
14
7
2.18
3.43
RC-691 53669N/2029E 110/-55 58-61 3 2.52
Mineralized intervals are based on 1-metre continuous samples utilizing a minimum 0.25 g/t gold cut-off level with a
maximum continuous internal dilution of 2 metres, except hole RC-670 where 4 continuous metres of internal
dilution was included in the reported interval.

No cutting of gold assays has been employed for reported intervals.
The attitude of mineralized intervals varies and reported mineralized intersections may not represent true widths.
Drilling has also resumed at other deposits and targets and will be reported when results are
available.

This includes deeper drilling at Kerekounda, Golouma West, Golouma South and Masato.
Additionally, initial resource drilling is underway at Kobokoto and Koulouqwinde, whose initial
resources will also be reported in early July along with resource updates based on current drilling at
Maki Medina and Niakafiri Southeast.
The Government of Senegal has granted OJVG a 15-year renewable Mining License for the project,
which will allow mining operations to begin in accordance with the recommendations of a full
feasibility study scheduled for completion in mid-2010.

This study will examine a proposed openpit/
underground mine complex, with initial production from five deposits feeding a central CIL mill.
Initial throughput is planned at more than 7,000 TPD to process soft oxide and saprolite ores,
ramping down to 4,400 TPD during transition from oxide to harder fresh rock.
Doug Turnbull, P.

Geo., is a qualified person for the purposes of National Instrument 43-101, and
has verified the data disclosed in this news release.

William Bond, P.

Geo., is also a qualified
Page 4 of 4
person for the purposes of National Instrument 43-101, and has supervised geologic field
procedures.

TSL Laboratories in Saskatoon carried out all assaying under industry-standard
QA/QC procedures.
To find out more about Oromin Explorations Ltd., visit www.oromin.com.
On behalf of the Board of Directors of
OROMIN EXPLORATIONS LTD.
"Chet Idziszek"_________
Chet Idziszek, President
Cautionary Statement
This document contains "forward-looking statements" within the meaning of applicable Canadian securities regulations.

All statements other than
statements of historical fact herein, including, without limitation, statements regarding exploration plans and our other future plans and objectives, are
forward-looking statements that involve various risks and uncertainties.

Such forward-looking statements include, without limitation, estimates of
exploration investment and the scope of exploration programs.

There can be no assurance that such statements will prove to be accurate, and future
events and actual results could differ materially from those anticipated in such statements.

Important factors that could cause actual results to differ
materially from our expectations are disclosed in the Company"s documents filed from time to time via SEDAR with the Canadian regulatory agencies
to whose policies we are bound.

Forward-looking statements are based on the estimates and opinions of management on the date the statements are
made, and we do not undertake any obligation to update forward-looking statements should conditions or our estimates or opinions change.

Forwardlooking
statements are subject to risks, uncertainties and other factors, including risks associated with public markets, mineral exploration, price
volatility in the mineral commodities we seek, and operational and political risks.

Readers are advised not to place undue reliance on forward-looking
statements.