Coleraine police say they've been made aware of inappropriate social media comments.
It surrounds a Polish family who had to move from their home due to a fire.
Police are reminding social media users that anything posted can be traced and may constitute a criminal offence.
The PSNI's Facebook comments are understood to refer to Sunday's early morning house fire on the Ballycastle Road.
No one was injured.
Woman rescued from house in Saintfield following petrol bomb attack
More than 100 firefighters tackle Omagh industrial fire as casualty airlifted
MLAs hit out at ‘Executive chaos’ after U-turn on special school summer schemes
Delivery driver forced at gunpoint to take object to police station
Elderly woman dies after road collision in Armagh