Updated on July 19 at 8:47 p.m.
The suspect involved in the shooting death of Lionel Mathews has been identified.
An arrest warrant was obtained for Christopher Rodriguez for one count of first-degree murder and one count of possessing a weapon as a prohibited possessor.
Rodriguez is considered dangerous and armed.
Deputies ask not to approach him.
If located contact 911 or 88-CRIME.
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The South Tucson Police Department requested the Pima County Sheriff's Department to help with a homicide investigation on July 19.
STPD responded to a report of a shooting in the 3000 block of South 6th Avenue at around 1:00 a.m.
When officers arrived, they found a dead man with gunshot wounds.
The man was identified as 21-year-old Lionel Mathews.
No arrests have been made at this time.
Investigation remain ongoing.
Anyone with information, contact 911 or 88-CRIME.