The chase began in Boston's theater district. At some point, the driver hit the officer and then kept going, police say. They say that the driver had crashed into at least one other car. Officers followed the car close behind, but did not initiate an official pursuit. The driver was eventually arrested in the South End.

A police officer in North Andover, Massachusetts shot an off-duty officer in her home Monday evening, investigators said.

North Andover officer Kelsey Fitzsimmons was shot by a fellow cop during a restraining order service at her home, with Massachusetts State Police investigating.