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Gunfire after a graduation ceremony at a northern California high school killed a teenager and wounded three other people on Wednesday in a parking lot at the campus, police said.
In addition to the 18-year-old slain at Fairfield High School -- which is around 50 miles (80 kilometers) northwest of San Francisco -- the shooting wounded people aged 11, 20 and 25, said police.
Gun violence kills thousands of people every year in the United States, where a constitutional right to bear arms trumps demands for stricter rules.
Police were alerted to the shooting at Fairfield High School around 7:15 pm (0215 GMT), Michelle Belyea, a police officer with Fairfield Police, told a news conference.
