San Francisco: At least 10 people were killed and 20 injured in a shooting at a college in the US state of Oregon on Thursday, police said. The gunman was said to be a 20-year-old man who started the carnage at the community college campus in Oregon before having an exchange of fire with police, Xinhua news agency reported.

Sheriff John Hanlin of Douglas county told a news briefing about three hours later that the lone shooter was dead on the scene at the Umpqua Community College in Roseburg, southern Oregon. According to news reports, four guns were recovered at the scene.