Service Employees International Union California President David Huerta was injured and detained while documenting an immigration enforcement raid in downtown Los Angeles Friday, labor union officials said — prompting protests and calls for his release.

The complaint describes law enforcement’s view the events surrounding the arrest on Friday of the president of the Service Employees International Union California at a protest over an immigration raid.

Huerta, 58, the president of the Service Employees International Union California, was arrested while protesting an immigration raid in Los Angeles.

Law enforcement officials conducted sweeping immigration raids in Los Angeles as part of President Donald Trump's immigration crackdown efforts and arrested 44 people for immigration-related offenses and one for "obstruction,