CHARLTON (CBS) – A five-alarm fire has destroyed a mill complex in central Massachusetts.

Some of the water trucked into Charlton to fight the mill fire (Photo by Kim Tunnicliffe)

Firefighters were called in from about 20 towns after flames broke out around 9 p.m. Thursday at the Charlton Woolen Mill. It burned for most of the night and triggered some explosions.

Six firefighters were treated for minor injuries.

Apparently only one person was inside when the fire started and that person got out safely.

The fire chief said they had to shuttle in water from a lake about a mile away because there were no hydrants in the area.

The cause of the fire has not been determined yet.

Several businesses were run out of the mill complex at City Depot Road and Route 31.

Damage is estimated at about $2 million.