Shooting at North Park Elementary School in San Bernardino

Two adults dead in "murder-suicide"

Two pupils taken to hospital in 'critical' condition

San Bernardino was reeling from yet more violence after a man walked into a school and shot dead a teacher, his wife, before killing himself.

Two students were critically wounded in the process - one of whom, an eight-year-old, later died of their injuries.

The man arrived at the North Park Elementary school on Monday morning, and went into one of the classrooms with a handgun.

"The children we do not believe were targeted,” said Police Captain Ron Maass. “The suspect had come to the classroom to visit. The adult female was in the classroom."

The two injured students were flown by MediVac helicopter to a local hospital, said Maria Garcia, spokeswoman for the school district.