The gunman who killed seven people at a California religious university lined up his victims and shot them one by one, Oakland police chief said.

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.

A 43-year-old former student of a small Christian university in California opened fire at the school, killing at least seven people and setting off an intense, chaotic manhunt that ended with his capture at a nearby shopping centre, authorities have said.

About 300 people were arrested during a chaotic day of Occupy protests in the US city of Oakland that saw demonstrators break into City Hall and burn an American flag, and police fire tear gas and use flash grenades to disperse the crowds.

AN Iraq war veteran badly wounded in clashes between protesters and police was upgraded to fair condition yesterday as activists called for a general strike against the Bay Area city.