A fire which broke out at a house in Rathcoole in Newtownabbey yesterday caused smoke damage.
There was no one present in the house at Carnreagh Bend at the time.
Detectives investigating the fire which broke out at around 5:40pm are appealing for information.
No damage was caused to neighbouring properties.
The cause of the fire is under examination, and police are working to establish the circumstances.
Police are appealing to anyone who was in the area and saw any suspicious activity, or who has information which could assist the investigation, to get in touch. The number to call is 101, quote reference number 1544 of the 26th April.
Alternatively, a report can be made using the online reporting form via www.psni.police.uk/makeareport. Information can also be provided to Crimestoppers anonymously on 0800 555 111 or online at www.crimestoppers-uk.