PORTLAND, Maine — UPDATE: Commercial Street has since been reopened.

A small fire in the building that houses two of Portland's busiest summer locations forced the closure of Commercial Street Sunday afternoon, according to officials.

Witnesses tell NEWS CENTER Maine smoke started billowing into Flatbread around 12:30 Sunday afternoon, forcing evacuation of all the customers.

Portland dispatchers said Commercial Street is currently closed and they have no time table on when the street will be opened. 

RELATED: Fire forces Portland businesses to close until repairs can be made

NEWS CENTER Maine will update the story as soon as more details are available.