There have been several mass shootings in Colorado Springs over the years.

Colorado has been the scene of several of the United States’ most notorious mass shootings, including those at Columbine High School in 1999 and a movie theater in Aurora in 2012.

Colorado Springs, in particular, has been forced to mourn several times before.

Last year, a gunman killed six people at a birthday party on Mother’s Day before taking his own life. The police said that “friends, family and children were gathered inside” a home at the Canterbury Mobile Home Park when the shooting occurred.

In 2015, a man with an assault-style rifle killed three people and wounded nine in a rampage at a Planned Parenthood office. Though he said he was motivated by opposition to abortion, he was found mentally unfit to stand trial and committed to a state-run psychiatric hospital.

Also in 2015, a man carrying a semiautomatic rifle fatally shot three people, apparently at random, on a residential street near downtown Colorado Springs. The gunman was fatally shot by police officers after he fired at them, the authorities said.