A police union official says four off-duty Minneapolis officers working a WNBA game walked off the job at the city's Target Center arena Saturday after Minnesota Lynx players wore pregame warm-up jerseys supporting the Black Lives Matter movement.

The shirts listed the names of Philando Castile and Alton Sterling, both fatally shot by police officers last week. Castile was killed by a police officer in suburban St. Paul during a traffic stop. The shirt also showed the Dallas police shield above the phrase "Black Lives Matter."

Minneapolis Police Federation President Bob Kroll tells the Minneapolis Star-Tribune  he commends the officers. He says they took their names off a list of officers to work future games.

The newspaper says Minneapolis police, the Lynx and the Target Center haven't commented.

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