Jose Espinoza, public information officer with the Laredo Police Department, told USA TODAY that just after 3 p.m. on May 10, a Union Pacific worker called the police department after finding sixindividuals in a boxcar.
Upon arrival, police requested local fire and EMS to assist with the individuals, but all six were confirmed dead on scene.
Espinoza said the investigation is ongoing pending an autopsy from the medical examiner's office, and the identities of the individuals are not going to be released until the next of kin are informed.