The teenager accused of killing three people at a party in Washington State on Friday says he read the manual for the AR-15 he used just before beginning his rampage, according to court documents.

A 19-year-old man who shot and killed three people at a party in suburban Seattle was so unfamiliar with his newly purchased AR-15 semi-automatic rifle that he parked his car across the street and ...

The Washington state teenager who killed three at a house party spent the moments before the shooting learning how to use his killing machine, according to prosecutors. Allen Ivanov allegedly told ...