One victim is listed in critical condition while the other two suffered non-lethal injuries, Glendale police officer Tiffany Ngalula said Wednesday evening.
The shootings were over when the officers arrived, Ngalula said, adding that the police “challenged the suspect and was able to take that person into custody.”
The identity of the suspect has not been released.
In a statement to CNN, the Westgate Entertainment District said it was “deeply troubled by this accident and that our thoughts and prayers go to the victims and their families.”
“Westgate will continue to work closely with the Glendale Police Department and internal security to best ensure the safety of our customers, tenants and residents,” said the statement.
The Glendale shopping complex is located about 15 miles from Phoenix.
The Glendale police department asks people still in the shopping complex to take refuge on the spot while making sure there are no other shooters or victims.
“With a scene of this magnitude, we will take our time with secondary research,” Ngalula told reporters.
One of those who remained in the block is Chipotle employee Isaac Osuna, who told CNN he had heard at least five shots before he saw people escape the scene.
Ngalula acknowledged that there could be a video of the footage and asked anyone with access to that evidence to hand it over to the police.
The state senator witnesses the shootings
Arizona state senator Martin Quezada said on Twitter that he witnessed the shooting.
“I’m fine. Many people shocked,” wrote Quezada.
Arizona Governor Doug Ducey also tweeted about the incident, saying that the state’s public security department has been in contact with the local police department.
“We are monitoring it closely … and the state is ready to support,” said the governor on Wednesday.
CNN’s Chris Boyette and Jennifer Henderson contributed to this report.
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