A Minnesota man is the lead suspect in his brother’s death in San Marcos, according to the San Diego County Sheriff’s Department.
Minnesota brothers Michael and Robb Young were visiting their father at his home in the 1700 block of Victoria Way in San Marcos.
On Wednesday morning around 6:30 a.m., Michael and Robb started arguing about Robb waking up early and being too noisy.
Investigators say the argument escalated into a fist fight in the home’s front yard. Michael eventually went back inside the house, but Robb did not follow.
After 40 minutes, Michael found Robb not breathing outside, so he started doing CPR.
As a neighbor passed by, Michael flagged her down and asked her to call 911. The neighbor’s husband tried to help Michael with CPR until paramedics arrived to take Robb to the hospital.
Robb was pronounced dead soon after, and his autopsy revealed his cause of death was blunt force trauma to the head.
When the case was classified as a homicide, deputies arrested Michael for voluntary manslaughter Thursday.
If you have any information about this incident, you’re asked to call the homicide detail at 858-974-2321 or 858-565-5200 if you are calling after hours.