WILTON - An early morning fire leveled a vacant house on Forest Lane in Wilton, fire officials say.

Neighbor David Bulpitt says he and his wife woke up at 5:40 a.m. to discover that the house across the street at 84 Forest Lane was engulfed in flames.

Bulpitt says the house was set to be demolished. The owner showed up on the scene and confirmed there was nobody inside the residence.

It took firefighters about half an hour to put out the blaze, which leveled the entire structure.

"Part of the roof collapsed and pancaked, so we're going to try to get an excavator in here to turn up the debris and work the rest of it out," says Capt. Kevin Czarnecki, of the Wilton Fire Department.

The cause of the fire is still under investigation.