Gunmen suspected to be armed robbers on Thursday, attacked a billion van belonging to one of the banks at Idi Ape area of Ibadan, the Oyo state capital.
There were reports of sporadic gunshots as residents scamper for safety.
Details of the attack were sketchy but it was gathered that two policemen were reportedly killed. Although eyewitnesses at the scene said about 10 people were shot during the robbery.
It could not be confirmed if the gunmen successful hijacked the bullion van.
