A passenger slashed a Greyhound driver’s throat as he drove through California last night, causing the vehicle to roll into a field.
At least two people died and dozens were injured, police said.
The attack happened as the driver was doing about 70 mph with a bus full of passengers.
“This was not an accident,” police lieutenant Jeff Johnson said.
The vehicle ended up on its side in a field near Coalinga, a town about 30 miles west of Fresno.
It had been travelling from Los Angeles to San Francisco.
Emergency crews found more than 50 people injured, 10 of them seriously. One of the dead was the driver, police said.
Authorities said one man, possibly helped by another, rose from his seat and attacked the driver with a knife. The alleged attacker was arrested, Johnson said.
There was no word on what the motive might have been for the attack or if other vehicles were involved in the crash.
Interstate 5 was closed to northbound traffic by 10 pm at the site of the accident along the heavily travelled route.
In October 2001, a passenger on a Greyhound bus in Tennessee cut the driver’s throat, causing a crash that killed seven of the 40 people on board. The driver told authorities the attacker used a box cutter.