PHOENIX — A suspect was arrested in connection to five separate shootings in the Phoenix metro area that left four people dead and one person injured, authorities said Sunday.

The Mesa Police Department said Iren Byers, 20, has been booked into jail on four counts of first-degree murder and one count of attempted first-degree murder for four separate shootings in Mesa, Arizona, and one in Phoenix on Friday and Saturday.

While a motive for the shootings wasn’t immediately clear, police said Byers was cooperative with authorities and took responsibility for all five shootings during questioning.

Byers told officers where they could find the clothing he wore and the handgun he used during his crime spree, which officers recovered at Byers’ residence, after completion of a search warrant, police said.

During the investigation, officers reviewed video footage from various sources in the area of the shootings. They found the same man in all the videos, wearing the same clothing as reported by witnesses at the time of the shootings.

Police also said shell casings recovered from the shooting scenes were all linked to the same 9mm handgun.

Mesa Mayor John Giles released a statement Saturday evening to say he was deeply disturbed by the overnight violence in Mesa and that “this is a tragedy felt throughout the city.”

“Mesa residents deserve a safe and peaceful city,” Giles said. “Unfortunately, incidents like this are all too common in large and small cities throughout the country.”

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