Early Monday morning, a 14 car Burlington Northern Santa Fe Railway (BNSF) freight train derailed near Flagstaff. The incident occurred approximately 25 miles east of city limits, near Twin Arrows on Interstate 40.

According to an email from Lena Kent, the director of public affairs for BNSF in Arizona and California, the train derailed at 5:14 a.m. There were no injuries sustained in the incident, and no chemicals were compromised.

"[The] cause is still under investigation," Kent stated in the email. "Both main lines are currently blocked with traffic holding."

As of Monday night, the lines have not reopened. At the scene, BNSF workers were seen working along the tracks with various equipment – including company trucks, lights and other machinery. Additionally, a freight train was parked nearby, and considerable vehicle traffic moved throughout Angell Road, which is parallel to the railroad.

The tracks will likely reopen Tuesday morning, as stated in Kent's email, which includes Amtrak passenger trains running between Los Angeles and Chicago.

"We anticipate moving rail traffic through the area in the morning," Kent stated.

From Angell Road, the tracks looked mostly clear, despite the presence of BNSF workers in the area. Additional updates will be provided if necessary.