ST. CLOUD, Minn. -

The FBI says the 20-year-old man who stabbed 10 people last month at a central Minnesota mall may have become radicalized recently and that the attack likely was premeditated.
    
FBI Special Agent Rick Thornton said Thursday at a news conference that Dahir Ahmed Adan took interest recently in Islam, withdrew from his friends and encouraged his sisters to be more religious.
    
Thornton also said investigators were told that said Adan yelled "Islam, Islam" and "allahu akbar" during the attack.
    
Thornton said the investigation is ongoing, including his online history, and that authorities are trying to obtain permission to unlock Adan's iPhone.
    
FBI Director James Comey said last week it appeared Adan was at least partly inspired by extremist ideology.
    
___
    
10:45 a.m.
    
Authorities say the 20-year-old man who stabbed 10 people last month at a central Minnesota mall asked several people whether they were Muslim before attacking.
    
Stearns County Attorney Janelle Kendall said Thursday at a news conference that Dahir Ahmed Adan was armed with two steak knives. The Sept. 17 stabbings began outside of the Crossroads Center mall and then moved inside.
    
FBI Director James Comey said last week it appeared Adan was at least partly inspired by extremist ideology.
    
Kendall also said the off-duty officer from a nearby city who shot Adan six times and killed him inside a Macy's store won't face charges.
    
St. Cloud Mayor Dave Kleis asked that people continue to think about those who were injured as well as those who saw the attack.
    
___
    
12 a.m.
    
Authorities are planning to update the public on their investigation into last month's stabbing that wounded 10 people at a central Minnesota mall.
    
The FBI has said it was investigating the Sept. 17 attack in St. Cloud as a potential act of terror, but details haven't been released.
    
Last week, FBI Director James Comey said it appeared 20-year-old Dahir Ahmed Adan was at least partly inspired by extremist ideology.
    
Authorities say Adan went to the Crossroads Center mall with what appeared to be a kitchen knife and stabbed or cut 10 people before he was shot and killed by an off-duty police officer. None of his victims' injuries were life-threatening.
    
A news conference is planned for Thursday morning in St. Cloud.