Prosecutors in Karen Read’s second murder case spent Thursday quizzing a key investigator about how he gathered information surrounding the death of the defendant’s Boston police officer boyfriend.

Prosecutors say Read, 45, backed her SUV into John O’Keefe, 46, and left him to die after dropping him off at a party hosted by a fellow officer. Her lawyers say she was framed in a police conspiracy and that someone inside the home that night in January 2022 must have killed him.

A mistrial was declared last year. Read’s second trial on charges of second-degree murder, manslaughter and leaving the scene has appeared to be similar so far.

See more at wpri.com.