A group calling itself Amazon Homeland Security has claimed responsibility for an attack on Amazon’s online store that left at least three people dead, the Washington Post reported.
The group said it targeted Amazon because the online retailer was hosting an event celebrating the city’s Independence Day on Saturday.
The attackers also claimed responsibility over an attack earlier this month in which a man entered a restaurant in St. Louis and opened fire, killing four people and injuring seven others.
The Post reported that the attackers used the Twitter handle “anonymous” to share details about the attack, including an address in the city of St. Charles and an address on the internet.
The attack was the deadliest attack in the United States since a gunman opened fire at a movie theater in Aurora, Colorado, on July 20, 2016.