Immigrant rights demonstrators protest outside Westwood Federal Building

About 200 immigrants' rights demonstrators staged a march in front of the Federal Building in Westwood today, creating a traffic jam on the San Diego (405) Freeway.

A Los Angeles Police Department spokeswoman said the LAPD got a call around 10:45 a.m. advising an immigrants' rights demonstration was under way.

Officer April Harding said police had "sufficient resources" at the scene to maintain order during the demonstration at Wilshire Boulevard and Veteran Avenue.

The California Highway Patrol was advising motorists to use alternate routes into Westwood, as traffic was backed up onto the 405 in both directions near the Wilshire Boulevard exits.