Active Shooter

"When someone makes a threat, it should be taken very seriously"

It marks the third mass shooting in the United States in two weeks

The suspect shot his parents and then later killed two more at a convenience store, police said

The incident prompted an active shooter alert but no one was injured, officials said

Family members told investigators that their son had previously attacked a classmate and may have a mental illness

Officer Talley was remembered as a kind soul. He leaves behind seven children

The suspect faces 10 counts of first-degree murder

Boulder police Chief Maris Herold announced the death toll at a news conference Monday night, fighting back tears

Training young children in active assailant response comes with a unique set of challenges

The president and vice president will meet with Asian American community leaders

In December, the suspect pleaded guilty but mentally ill to two counts of murder

Issues with interagency radio communications cost precious minutes, a new report says

Most of the victims were Asian, prompting fears that the shooting spree was a hate crime

A crowd of church-goers, who were there for a Christmas celebration, were sent running