FBI to Investigate Immigration Rally

This video image provided by KVEA/Telemundo shows KCAL cameraman Carl Stein on the ground during a police response during an immigrants rights rally, Tuesday May 1, 2007, in Los Angeles. Telemundo's video was shown on a KCAL news broadcast. (AP Photo/KVEA/Telemundo) (AP)

A police order to disperse probably wasn't effective because it was in English and given from a helicopter, Bratton said Wednesday. Many at the protest were Spanish speakers, he said.

Seven officers suffered minor injuries, and another was pushed off his motorcycle. About 10 other people were treated for minor injuries, though authorities expected the number to rise.

The Police Department has opened two investigations, one to create an "after-action report" that evaluates planning and operations, and another by internal affairs to probe complaints against officers.

Bratton said department investigators were still in the process of identifying all officers involved in the clashes, but that no decision about placing any on administrative leave would be made until the probe is finished.

An independent review also has been undertaken by the investigative arm of the city's civilian Police Commission, a five-member board of mayoral appointees that sets policy for the Police Department.

Police union leaders urged against a "rush to judgment."

"Our officers gave a legal dispersal order and were met with violence. In the coming days it will become clear what transpired," Los Angeles Police Protective League President Bob Baker said in a news release.

___

Associated Press writer Julie Watson in Mexico City contributed to this report.