Authorities believe two illegal immigrants died while trying to swim in the cold waters of Port Isabel.
Port Isabel Police Chief Gualberto Gonzalez reported that a group of illegal immigrants crossed the border early Tuesday morning.
The immigrants made it to the Port Isabel area where they were wading or swimming near the Southpoint Marina.
But the cold weather and water was too much for the immigrants.
Chief Gonzalez said police received a phone call reporting that the immigrants were in distress.
Rescuers from the U.S. Coast Guard and Homeland Security were able to locate one of the immigrants.
Paramedics rushed that immigrant to a local hospital where he is being treated for hypothermia.
Chief Gonzalez said that authorities receoved the bodies of two other immigrants, who are believed to have died from exposure.
The surviving immigrant told investigators that there were two other men with the group who remain missing.
U.S. Immigration & Customs Enforcement (ICE) officials reported that agents are investigating the incident to see if it's relating to a human smuggling network.