There were multiple fatalities after a National Guard helicopter carrying three soldiers and a Border Patrol agent crashed near the southern border in Texas, authorities said. 

The helicopter went down in La Grulla, a border town that sits near the Rio Grande in Starr County.

THOUSANDS OF NATIONAL GUARD TROOPS HAVE NOT RECEIVED PROMISED ENLISTMENT BONUSES

Law enforcement sources told Fox News that the three National Guard soldiers were working on federal orders on behalf of the Department of Homeland Security.

The helicopter was a New York National Guard "Lakota."

Fox News Digital has reached out to the Starr County Sheriff's Office, the National Guard and U.S. Customs and Border Protection.