Oakland pier collapses and floats off

A pier in Oakland collapsed and floated out into the Brooklyn Basin near Ninth Avenue along the Embarcadero on Friday, officials said.

About 300 feet of shoreline collapsed and slid into the estuary, pushing the pier out into the water, Sean Laffan of the Oakland Fire Department said. The pier is located at a construction site.

Crews from the Oakland Fire Department, the Oakland Police Department and the U.S. Coast Guard responded to the scene. Laffan said that the fire department deployed boom along the site to contain spills.

Cory Mendenhall, a spokesman for the Coast Guard, said that a shipping container and other debris slid into the estuary after the collapse. No injuries have been reported, Mendenhall said, and there was no pollution beyond the debris in the water.

Mendenhall said the Coast Guard issued a broadcast to mariners to use caution in the area.

Annie Ma is a San Francisco Chronicle staff writer. Email: ama@sfchronicle.com Twitter: @anniema15