The man suspected of threatening people at a Colorado Springs Walmart with a gun Monday night was arrested Tuesday.
Jody Romero, 19, was arrested on suspicion of felony menacing.
Dozens of customers were locked inside the Walmart after a man brandished what appeared to be a rifle and threatened people. The gunman left the Walmart, entered the Chapel Hills Mall and went into the movie theater there with what turned out to be a BB gun, officers reported.
The man didn't appear to be targeting anyone in particular, police said, but he did appear to be suffering a mental health problem.
"As far as we can tell, he never threatened anybody in particular," police Sgt. Jonathan Sharketti said. "He just said to people, you know, 'I'm here to shoot people. This is for ISIS.' Random statements like that."
The incident raised fears among the 30 to 40 customers at the Walmart, coming in the wake of the Nov. 1 slayings of three people at a Thornton Walmart, the Nov. 5 mass shooting that killed 25 people and an unborn child in a church in Texas, and the Las Vegas massacre of 58 people Oct. 1 at an outdoor concert.