Officer Darrel Adams of the Memphis Police Department was killed Saturday when he was struck by a tractor-trailer at a crash scene. (Photo: Memphis PD/Twitter) -

Officer Darrel Adams of the Memphis Police Department was killed Saturday when he was struck by a tractor-trailer at a crash scene. (Photo: Memphis PD/Twitter)

Memphis Police say Officer Darrell Adams, 34, was killed while conducting a crash investigation on I-40 Saturday morning.

Adams was struck by an oncoming tractor trailer, WJHL reports.

Officer Adams worked with the Memphis Police Department since April 2016.