Heidelberg, Germany ? Two U.S. soldiers died after they were hit by a train in southwestern Germany, police said Sunday.

The two women, aged 21 and 22, started walking across the tracks at Neckarsteinach station, east of Heidelberg, as a train was approaching late Saturday evening, police said.

The train driver sounded a warning signal and braked, but was unable to avoid a collision. The younger woman was killed immediately and her companion died on the way to a hospital.

Police said the women had been at a nearby party and apparently were trying to get to a parking lot near the station.

The U.S. military said the soldiers belonged to the Army’s 5th Corps, headquartered in Heidelberg. The victims’ names were being withheld pending notification of next of kin.