Police in Texas say 11 people are dead and 12 others injured after a crowded pickup truck slammed into a tree along a rural highway.

Authorities investigating Sunday's crash near Berclair, about 130 kilometers south of San Antonio, said they did not yet know if the victims were illegal immigrants, but that it is “possible.”

Border Patrol officials are assisting with the probe.

In April, a van carrying immigrants crashed while fleeing Border Patrol agents near the Mexican border, killing nine of the 17 people on board.