The Glastonbury fire marshal’s office is investigating a fire at 97 Douglas Road on Thursday night.
The Glastonbury Fire Department responded at 8:44 p.m. to a report of smoke on the second floor of the single-family home and encountered heavy smoke conditions.
The residents were out when crews arrived.
The fire was brought under control at 9:14 p.m. No injuries are reported.
The cause of the fire is not yet known.