The man whose body was pulled from the Napa River Saturday night in the Oxbow district was identified Monday as John Spencer Loftus, 24, of Napa.
Police had been called around 5 p.m. Saturday about a man behaving erratically. He was running behind bushes and swimming in the river behind the CIA at Copia complex, 500 First St., Napa Police said.
The man could not be located. At 8:30 p.m., police got calls that he was still there, splashing in the river and yelling for help, police said.
The Fire Department launched a rescue boat at about 9:30 p.m. Loftus was found lying face up in water that was no more than waist high, said Sheriff's Capt. Steve Blower.
First responders began CPR, but Loftus was declared dead at Queen of the Valley Medical Center.
Loftus had a history of drug abuse and had been living out of his car, Blower said. The young man had been clean of drugs, but apparently had resumed using methamphetamine, Blower said.
The coroner's office will further investigate the cause of death.