Local authorities say two people were killed at an elementary school in San Bernardino, California.Another student was also wounded and taken to trauma centers. The active-shooter situation appears to be over, though the school, North Park Elementary, has been evacuated as police investigate.

“We believe this to be a murder-suicide,” San Bernardino Police Chief Jarrod Burguan tweeted. “Happened in a classroom.”

The two dead adults are believed to be the gunman and a teacher. Officials have indicated that the shooter walked into a classroom and shot the teacher, who may have been a former girlfriend, then turned the gun on himself.