Oklahoma ? A train derailment in central Oklahoma on Friday sent fireballs into the sky but caused no injuries.

Eight cars on the 110-car Burlington Northern Santa Fe train derailed, seven of which were carrying either crude oil or ethanol, company spokesman Joe Faust said. He said he didn’t know how many of the derailed cars had caught on fire.

He said only two people – an engineer and a conductor – were aboard the train, and neither was injured.

The derailment occurred around 3 p.m., about 30 miles northeast of Oklahoma City, close to the town of Luther. The train was traveling less than 40 mph from Tulsa to Temple, Texas, on tracks operated by Stillwater Central Railroad. A call to the railroad’s office went unanswered Friday afternoon.

Television footage showed intense flames and heavy black smoke in the rural area.

Explosions at the site sent large balls of fire into the air, and the blaze continued into the afternoon.