Flames broke out on the barge used to launch July 4 holiday fireworks over Compo Beach on Thursday night. / Photo, Westport Fire Department

WESTPORT — A blaze that erupted on the barge where July 4 holiday fireworks were launched Thursday night was extinguished while averting injuries to the crew and Compo Beach spectators.

Westport firefighters, in coordination with the Grucci barge crew launching the pyrotechnics, were able to douse flames that broke out at 9:30 p.m. before significant harm resulted during the Westport PAL sky show, according to a Fire Department report.

Assistance was provided by a boat dispatched by the Norwalk Fire Department.

The cause of the fire, which was fully extinguished about 11:25 p.m. Thursday, remained under investigation Friday.

The fireworks barge, having escaped damage, was able to return to Long Island to prepare for another fireworks display Friday night, officials said.