A 22-year-old man who claims the marijuana he smokes must have been laced with an unknown narcotic stabbed a dozen people in Rockford, Illinois on Thursday, killing four and injuring seven, NBC News reports. Officials say Christian Soto stabbed and ran over with a car one victim, the friend he was smoking with, then stabbed the man’s mother. He then–allegedly–went into various houses stabbing and hitting people including a mail carrier, who died.
Soto entered a house through an unlocked back door and grabbed a softball bat, which he used to beat three teenaged girls watching movies in the basement. One of the girls, a 15-year-old, was hit and killed trying to protect her sister and friend.