Canada’s prime minister, Justin Trudeau, was uninjured after his motorcade was involved in a minor crash in Simi Valley, Calif., on Friday night.

Mr. Trudeau’s motorcade was being escorted by the California Highway Patrol Dignitary Protection Section at 7:30 p.m. after leaving the Ronald Reagan Presidential Foundation and Institute.

Four miles from the library, a police motorcycle stopped to block the road when the driver of a passenger vehicle tried to make a left turn and pull around the motorcade, Cmdr. Roy Jones of the Simi Valley Police Department said in an interview on Saturday.

The police motorcycle began to move and was struck by the vehicle, throwing the police officer into another police motorcycle in the motorcade. Mr. Trudeau’s vehicle did not stop.