Michael Joseph Rosales-Osburn, 28, was shot to death on April 10, 2020, at the Acacia Park Apartments on North Little Mountain Drive in San Bernardino, California. Officers who responded late that night found him in a common driveway area with multiple gunshot wounds; he was pronounced dead at the scene.

The San Bernardino Police Department opened a homicide investigation. The shooter had fled before officers arrived; investigators interviewed residents and reviewed surveillance footage but initially did not disclose any suspects or a motive. No arrests had been made and the case remained unsolved as the investigation continued.

Anyone who was at Acacia Park Apartments on April 10, 2020, or who has information about activity in the common driveway that night is asked to contact the San Bernardino Police Department.