Fire tore through a vacant home at 18 Maple Ave. in Willimantic this morning and officials said it appears to be suspicious.
Firefighters responded just after 3 a.m. and the fire had already spread to all three stories of the home.
Crews had to evacuate around 15 neighbors because the homes were so close together, but those residents have been allowed to return home.
Tweets from the Willimantic Fire Department say the three-alarm fire started on the porch and extended to the house.
Officials are investigating the cause, but said it does appear to be suspicious.
The fire is now out and officials from the fire marshal's office are at the scene, according to fire department Tweets.
No injuries have been reported.
