LAKE RONKONKOMA - Suffolk police and arson detectives are investigating a suspicious overnight fire that has forced a family out of its Lake Ronkonkoma home.

The fire occurred at a home on Weichers Street around 1:30 a.m. Police tell News 12 Long Island that they do not believe the fire was caused by a firebomb.

The owner of the house, Anthony Rooney, says he was in a deep sleep when he heard the blaring of smoke alarms. Rooney and his family managed to escape alive, but when they ran outside, they discovered their two cars in the driveway, a BMW and a Hummer, had been vandalized with graffiti.

This afternoon, the family returned to the severely damaged house to retrieve some valuable possessions.

Rooney's 15-year-old son, Justin, says neither he nor his brother or dad have enemies. However, according to a family friend, Rooney admitted that he'd been having trouble with some people at work who threatened him.

Detectives believe the fire may have been started using available materials. They are asking anyone with information to call 1-800-220-TIPS.