17-year-old girl arrested in connection to deadly stabbing in northwest Fresno

FRESNO, Calif. (KFSN) -- A 17-year-old girl faces murder charges after police say she stabbed her boyfriend's roommate to death in northwest Fresno last week.

Fresno police responded to a 911 call about a body discovered underneath a bridge in a canal bed near Hughes and Norwich on Tuesday, October 12.

When they arrived, they found 20-year-old Sergio Bonboster dead. His body had been burned and hidden beneath a tarp for what appeared to be several days.

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An autopsy determined the Bonboster died after being stabbed multiple times.

Investigators say Bonboster had a roommate, 20-year-old Lawrence Madrid, and lived nearby.

Detectives questioned Madrid and his 17-year-old girlfriend. Police believe there was a fight between the group at the house, and the teen stabbed Bonboster multiple times with a knife.

The teen has been booked into the Juvenile Justice Center for murder. Madrid is now in the Fresno County Jail and will be charged with accessory to murder.

Bonboster's roommate, 20-year-old Lawrence Madrid, has been booked in the Fresno County Jail on accessory to murder charges.

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