WASHINGTON, D.C. — The engineer of Amtrak train 89, which derailed in Chester City, Pa. in April, killing two, tested positive for marijuana and opioids, The Inquirer reports.

The findings are part of the information released on Thursday by the National Transportation Safety Board, with the agency expected to release their conclusions on the cause of derailment later this year.

The train was traveling at 106 mph and the engineer reported seeing no flag men or whistle boards, which might have warned him to the presence of the two workers on the track who were killed, as he neared the work site. He saw a large piece of equipment on an adjacent track and then, seconds later, according to documents, saw the backhoe in his path. He then sounded his horn and applied emergency braking. For the full story, click here.

NTSB opens docket for 2016 Amtrak accident near Chester, Pennsylvania https://t.co/NDTAVmGo21.

— NTSB_Newsroom (@NTSB_Newsroom) January 26, 2017