When the shooting stopped, about 40 to 50 people came out on the U.S. side and turned themselves in.
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U.S. Border Patrol agents on the American side of the Rio Grande were forced to take cover Friday night when high-caliber weaponry was fired at them from the Mexican side of the river, sources told FoxNews.com.

The weapons were fired at the U.S. side of the riverbank in the area of the Rincon Peninsula across the Rio Grande from Reynosa, Mexico, at about 8:30 p.m., sources said. Bullets ricocheted into an area where Border Patrol agents were positioned, Rep. Louie Gohmert, R-Texas, told FoxNews.com.

Border Patrol sources confirmed Gohmert’s account, and said the shots may have been fired by .50-caliber weapons.