Shots have been fired at a house in Derry.
Four masked men went to the house in Dove Gardens shortly before 2300 BST on Tuesday.
A number of shots were fired at the door.
Two men were inside at the time, but neither were injured.
A short time later, petrol bombs and other missiles were thrown at police officers investigating the incident.
One officer sustained a leg injury after being hit by a stone.
A motive for the shooting has not yet been established.