CUSTER, Wash. — Recovery work continues on the wreckage of the BNSF oil train that derailed and caught fire in Custer Tuesday.

Railroad spokesman Justin Piper told a news conference yesterday at three loaded tank cars were punctured in the derailment.

He says they’re currently working to off-load oil from the cars that came off the track.

Courtney Wallace is also with BNSF and said no cause for the derailment has been determined.

She said FBI and other agencies are on the scene and the investigation is on-going.

Speculation has swirled after the arrests last month of two Bellingham women who are charged with sabotaging railroad tracks in Whatcom County.