Local Ukrainian police say a man armed with a firearm and possibly explosives has barricaded himself on a bus with around 20 people on board in the town of Lutsk in north western Ukraine.
A statement from local police says police are on the scene.
Ukrainian media report police received an emergency call saying a man with a gun and explosives had taken over the bus and that several guns shots were heard earlier.
Police are reportedly negotiating with the man by phone.
Source: Websites
