Part of East Brundage Lane was closed for about two hours Sunday after Bakersfield police say a man sustained serious injuries crawling under a train.

Witnesses told officers they saw Alfred Jenkins, a 56-year-old Bakersfield resident, ignoring crossing arm signals and getting under the train as it slowly backed up.

"His motive for crawling under the train remains unclear," reads a news release from the Bakersfield Police Department.

The release says officers responded at 3:28 p.m. to the incident on the San Joaquin Railroad tracks west of Dr. Martin Luther King Jr. Boulevard near Wilkins Street. It says Jenkins was transported to a local hospital where he is listed in critical condition.

The train stopped and its crew assisted investigators, whose work on the case continues, the release says.