A man has escaped injury after a petrol bomb was thrown through the front window of his house.
The PSNI said the incident occurred on Alexander Avenue in Armagh at around 12.45am yesterday.
A brick was used to smash the front window of the house before the petrol bomb was thrown inside.
It started a fire, although it only caused scorch damage to the room, police said.
The man, who was in the house on his own, managed to put the blaze out, police added in a statement.
A number of men dressed in dark clothing were seen running from the area.
The PSNI added: "There were no reports of any injuries.
"Our enquiries are currently ongoing.
"We would ask anyone with any information which could assist with our investigation to contact police."