Motive “unknown”…   
Minnesota – A knife-wielding man who injured eight people at a mall in central Minnesota Saturday evening asked at least one victim whether they were Muslim and referenced Allah during the assault, authorities said Wednesday.

St. Cloud Police Chief William Blair Anderson said the suspect, whom he did not identify, was shot and killed by an off-duty police officer. All but one of the eight victims had been treated and released from a local hospital and all were expected to survive their injuries.
Police responded reports of several stabbings at the Crossroads Mall at around 8:30 p.m. local time. Witnesses also reported hearing gunshots at the scene. 
Anderson declined to call the rampage terrorism and said that his department would do its “due diligence” on the case.
The chief added that the suspect was wearing the uniform of a private security company and noted his only prior contact with police had been through traffic stops.
The attack caused chaos and prompted a lockdown of the mall, which is located approximately 70 miles northwest of Minneapolis.  (read more)