NEW YORK -- A scaffold collapsed in Brooklyn Sunday, leaving a big mess on a nearby sidewalk but causing no injuries, firefighters said.

The collapse happened at a site near East 12th Street and Avenue O in the Midwood section.

A witness said the scaffolding was all the way up a new, six-story construction, and it crushed cars on both sides of the street.

The scaffolding also took down electrical wires, the witness said.

A high wind advisory was in effect Sunday, and the Buildings Department issued a reminder to all builders, contractors, developers and property owners to secure their construction sites and buildings.