A petrol bomb and brick have been thrown through the window of a flat in Ballymena on Monday evening.
Police confirmed the incident happened in the Inchcolm Avenue area and that the occupants escaped injury.
PSNI Detective Sergeant Crothers said: “Shortly after 11.15pm, it was reported that a brick had been thrown through the window of a property in the Inchcolm Avenue area followed by a petrol bomb.
“Damage was caused to the inside of the apartment, however no one was injured.
“This is being treated as arson with intent to endanger life and I’m appealing to anyone who may have witnessed anyone suspicious in the area or to anyone with CCTV, doorbell or other footage that could assist enquiries, is asked to contact detectives on 101 quoting reference 1818 20/01/25.”