WILLIAMS Authorities are trying to determine the cause of a freight train derailment in northern Arizona that heavily damaged 23 cars and a load of new vehicles.

Coconino County Emergency Management officials said the derailment occurred around 11:20 p.m. Wednesday east of Williams, which is 33 miles west of Flagstaff.

They said the BNSF train cars were carrying a variety of new cars, vans and truck.

Photos from the derailment scene showed heavy damage to many vehicles and freight cars, white vans poking out of other damaged rail cars and an upside-down vehicle crushed under another freight car.

County Emergency Management officials said cleanup was already underway Thursday morning.

There was no immediate word from Texas-based BNSF Railway about the derailment.

There have been a rash of train derailments across the country in recent months, deepening concerns about rail safety in the U.S.

ABC15, KGUN 9’s sister station in Phoenix received the following statement from BNSF Railway:

“BNSF Railway can confirm that at approximately 11:20 pm on June 7th, approximately 20 automobile cars derailed in Williams, AZ (35 miles west of Flagstaff, AZ). No injuries or haz mat involved. Cause is under investigation.”