SAN ANTONIO -- Union Pacific police say a man was walking east on the railroad tracks near downtown when he was struck by a train.
The accident happened at around 11:30 Thursday morning between Brazos and I-35.
Authorities say the victim is a Hispanic man in his 40s.
They said the engineer on the eastbound train saw the man and started blowing the horn as he started slowing the train down.
Union Pacific police said they don't know why the man was unable to hear the train, but when he finally did, it was too late.
"We arrived on scene the individual was found laying on the right of way and had suffered some injuries,was transported to Brooke Army Medical Center in unknown condition," said Matthew West with Union Pacific. "At this time we are still conducting our preliminary investigation with the assistance of the San Antonio Police Department."
The man, who is suffering from extensive head trauma, was taken to SAMCC.
According to Union Pacific, the victim was trespassing at the time of the accident.
An investigation is underway.