FBI says it thwarted an attack on the Mall of America by a teen it supplied with an assault rifle

MINNEAPOLIS (AP) — The FBI thwarted an attack on the Mall of America by a teenager after agents supplied him with an assault rifle, authorities said Wednesday.The 18-year-old had been under investigation for nearly two years, trading messages with a confidential informant, before agents sold him the rifle and ammunition and arrested him on the spot, they said.“This was a radicalized young man who needed to be watched,” U.S. Attorney Daniel Rosen said as he praised the FBI investigation. Agents “were able to detect a threat, and disrupt it, before the defendant carried out his intention to kill, in his words, maybe 30 to 60 people.”Sheikhdoon Abdullahi Mohamud, 18, was arrested Tuesday in a public park in Richfield, several miles northwest of the Mall of America, after he paid $600 to an undercover FBI employee posing as a member of ISIS for an AK-47 and 200 rounds of ammunition, according to the criminal complaint.In text messages with the informant, Mohamud repeatedly affirmed his int