VALINDA — An attacker stabbed a man Wednesday as he rode a bicycle, authorities said.
The wounded man was flown to the hospital by helicopter, where he was expected to survive, Los Angeles County sheriff’s Lt. Hiroshi Yokoyama said.
The incident occurred about 5:30 p.m. at Valinda Avenue and Doublegrove Street, the lieutenant said.
The victim, estimated to be 30, was riding his bicycle when the attacker got out of a black, 4-door vehicle and approached, Yokoyama said.
The assailant then pulled a knife and stabbed the bicyclist in the abdomen, he said.
The armed man was described as a Latino man of about 20 years old, standing 5 feet 9 inches to 5 feet 11 inches tall, weighing about 210 pounds. He wore black pants and a light-colored shirt.
A motive in the attack was not clear, Yokoyama said, and the wounded man did not appear to be fully cooperating with police.

*The stabbing was the ninth violent attack since June 5 in the Valinda, East Valinda or La Puente areas. Officials have said much of the violence stems from disputes between the Bassett Grande, Puente Trece and El Monte Flores street gangs.
The area has seen eight shootings, three of them fatal, since early June.