A developmentally disabled man has been arrested in connection with a fire that gutted a group home he shared with four other adults.

All the residents escaped uninjured in Saturday night’s blaze. Damage to the three-story Tacoma house was estimated at $300,000.

Police said the fire was arson and began in one resident’s bedroom. Neighbors said some of the residents of the home smoked, including the man whom police took into custody.

The man has no history of setting fires, said Tim Brown, acting director of the state’s Division of Developmental Disabilities.