Immigration raids Friday led to the arrests of dozens of people and caused hours of chaos in downtown L.A. Here is what we know so far.

A local immigrant rights organization said more than 45 people were detained in the operations, which were described as “random sweeps.”

LOS ANGELES (AP) — After federal immigration authorities arrested more than 40 people Friday across Los Angeles, protesters gathered outside a federal detention center demanding their release before police in riot gear tossed tear gas canisters to disperse the crowd.