Collie Police are investigating an alleged robbery incident occurring in Collie's central business district on Tuesday afternoon.
A woman was arrested after she was seen leaving the incident by a Collie Police officer who was in the area at the time.
Police blocked off Steere Street – between the Steere Street and Johnston Street intersection and the Steere Street and Medic Street intersection – while investigating the scene.
Officers also cordoned off a bag placed in Soldiers Park close to Steere Street.
One witness said there was an argument in a nearby store before the accused ran out onto the road.
The investigation is still ongoing.