Two people have been shot by a "terrorist armed with an AR-15" at the Westgate Entertainment District, a large shopping mall in Phoenix, Arizona.
A suspect is reportedly in custody after at least two people were shot at on Wednesday evening, local time.
Arizona State Senator Martin Quezada saw the shooting.
"I just witnessed an armed terrorist with an AR-15 shoot up Westgate. There are multiple victims," he tweeted.
Police have asked people to stay out of the Westgate area.