Detectives are appealing for information after a detached house in the Sandymount area of Magherafelt was extensively damaged by fire on Friday.
The cause of the fire has yet to be established.
Detective Inspector Will Tate said: “Sometime between 2.30am and 4am on Friday 4th December, a detached property was extensively damaged.
“Fire service attended however the cause of the blaze is still to be established.
“If you can help with enquiries please call the 101 number, quoting reference number 11241215. Alternatively information about crime can be passed via the independent Crimestoppers charity on 0800 555 111.”