US college killer 'held a grudge'

The gunman who shot seven dead at a small US university had been upset with its administration and felt “mistreated” and “disrespected” by students, police said.

South Korean-born former student, 43-year-old One L. Goh, turned himself in at a nearby supermarket shortly after the shootings at Oikos University in California that also left three people wounded, trapped some in the building and forced others to flee.