PHOENIX — Two unidentified male suspects are in custody in connection to a shooting in Casa Grande that killed four people on Thursday, police said.

#CGPD update-

2 males now in custody in connection with shooting. Names of subjects and victims not released at this time. None outstanding — Casa Grande Police (@CasaGrandePD) October 6, 2017

None of the suspects or victims have been identified. Police said there are no suspects outstanding.

The shooting happened in the 400 block of north 13th Street. Google Maps showed it was a residential area.

An eyewitness told the Casa Grande Dispatch she heard arguing, multiple gunshots and a woman speeding. She then saw a car speed away from the area.

Nearby Casa Grande Middle School and Saguaro Elementary School were placed on lockdown while police searched the area.

Casa Grande is about 45 miles southeast of Phoenix.

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