Authorities in Woodbury are investigating the cause of an overnight fire on Tuesday.

Crews were called to a townhome complex on the 2500 block of Cornelia Trail around 12:16 a.m.

The deck of one of the units was on fire, with flames extending to the roof.

Authorities say all occupants were evacuated without any serious injury.

The fire was contained to the outside of the original unit.

The cause of the fire remains under investigation.