Crews are trying to determine the cause of a fire that broke out inside of a vacant house Thursday evening.

The fire broke out just after 8 p.m. at a home on Sandy lane in Warwick. Neighbors say the home has been vacant for a while and it has been an eyesore for years.

Warwick Battalion Fire Chief Thomas Sugrue said there was no one inside the building when the fire broke out, but there is extensive damage to the interior of the home.