Midland, Texas: Authorities say four people are dead and 17 others are injured after a train slammed into a parade float headed to a West Texas event honouring wounded veterans.

City of Midland spokesman Ryan Stout says the crash happened at a Union Pacific railroad crossing around 4.30pm Thursday (2.30am Friday UAE).

Stout says 10 of those injured are in critical condition at Midland Memorial Hospital, while the seven others are in stable condition.

National Transportation Safety Board spokesman Peter Knudson says the agency is investigating. A message left with a Union Pacific spokeswoman was not returned.

The parade was supposed to end at a “Hunt for Heroes” banquet. The wounded service members were then going to be treated to a deer-hunting trip this weekend.