The National Transportation Safety Board says a southbound Union Pacific train was given signals to slow down and wait for an oncoming train to move onto another track moments before the two trains collided in northeast Arkansas.
Two crew members on the southbound train died in the collision Sunday near Hoxie, while two others on the northbound train were injured.
At a press briefing, NTSB investigator Michael Hiller said the southbound train was signaled to wait for the northbound train to move onto an unoccupied track. Hiller says the southbound train did not stop and the two trains collided. Hiller's comments were reported by Jonesboro television station KAIT.
The cause of the collision is still under investigation and recorders from both trains are being analyzed.