The sister of Willie McCoy, who Vallejo police fatally shot in 2019, was killed in a crash last week and police are investigating the death as a homicide, according to police and the family’s attorney.

Sharmell Mitchell, 48, was taken off life support on Friday after being ejected from a vehicle and suffering head injuries, according to Vallejo police and attorney Melissa Nold.

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One of the detectives assigned to the investigation into Mitchell’s death is Jarrett Tonn, the Vallejo police officer who fatally shot 22-year-old Sean Monterrosa, a San Francisco resident, in 2020 during a night of protests against the Minneapolis police murder of George Floyd.

After a third-party investigation found he violated department policies led to his termination, he was reinstated to the department in August 2023. Like the shooting of McCoy, Monterrosa’s killing prompted protests against Vallejo police and calls for justice.