Six bodies were found on Sunday in a train boxcar in Laredo, Texas, ⁠according to police.

A Union Pacific worker discovered them in a train yard at a remote ⁠location near ​the ⁠Mexican border, and police and firefighters later confirmed ⁠they had died, said Laredo ​Police Investigator ⁠Joe Baeza.

Police ‌have not determined how they died, Baeza said. The investigation ‌is ongoing, he ‌said.

There were no survivors, he said.

Police did not say where ⁠the individuals were from.

Past instances of multiple deaths in trains and tractor trailers not far from the U.S.-Mexico border have involved migrants, including a ‌2022 incident in which ​53 were found ‌dead in an abandoned ⁠truck with malfunctioning air ⁠conditioning on the outskirts of San ‌Antonio.