(AP) — Authorities have released the names of a man who was killed and another who was injured in a Lincoln accident that may have involved the racing of their motorcycles.

Lincoln police identified the dead man as 24-year-old Petro “Peter” Denysyuk. The injured man was identified as 26-year-old Sergey Kapliyev.

Police say the accident occurred about 4 p.m. Sunday on the west side of Lincoln. Police Capt. Danny Reitan says the two men lost control of their motorcycles as they drove north on Folsom Bypass. Denysyuk’s motorcycle crashed into a stream. His body was found there. Kapliyev landed in a grassy area nearby. He’s been listed in fair condition at a Lincoln hospital.

Police spokeswoman Katie Flood says the two men may have been racing.