OKLAHOMA CITY (AP) - Another Oklahoma soldier has died in combat in Afghanistan.

The Department of Defense announced Monday that 27-year-old Spc. Francisco J. Briseno-Alvarez Jr. died Sunday of injuries he suffered when insurgents attacked his unit with an improvised explosive device in Laghman province.

Briseno-Alvarez was assigned to the 1st Battalion, 179th Infantry Regiment, 45th Brigade Combat team based in Stillwater.

The Oklahoma City resident is the 12th Oklahoma National Guard soldier to die in Afghanistan since July 29.

Members of Briseno-Alvarez's family couldn't be reached for comment on Monday. Two telephone listings in Oklahoma City were disconnected.