The U.S. embassy in the city across the Rio Grande from Brownsville, Texas, issued a warning to residents to shelter in place after four people were killed on Monday in a gunfight with marines in the Mexican border city of Matamoros.
What Happened?
An unnamed state official who was not authorized to speak publicly said that the shooting took place on a Matamoros street when a marine patrol was engaged by gunmen. The official reported that police found weapons and tactical gear. The Marines weren’t hurt.

Source: cbs News
The Navy acknowledged that its employees were involved but gave no further information. A request for information received no response from the federal Attorney General’s Office.
A shelter-in-place order was issued for staff members until 1:30 p.m. on Monday by the U.S. Consulate in Matamoros using X, the platform that replaced Twitter. The order was made “due to gun violence occurring in the city.”
Four Americans were kidnapped in Matamoros in March when one traveled there for a scheduled cosmetic procedure. Before they could be rescued, two of them passed away from gunshot wounds. In Matamoros and the state of Tamaulipas, there are active Gulf cartel cells as well as other organized criminal gangs.