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The victim, identified as Jimmain Middleton, 35, died Monday, Oct. 2, at Banner-University Medical Center ÃÛèÖÖ±²¥, said Sgt. Kimberly Bay, a ÃÛèÖÖ±²¥ Police Department spokeswoman.

On Thursday, Oct. 5, Adan Jesus Medina, 30, was arrested after he was released from a hospital and booked into the Pima County jail on suspicion of first-degree murder in Middleton's slaying, Bay said.

A relative of Medina's, Alexis Noe Medina-Luna, 21, was taken into custody Tuesday, Oct. 3, and booked into the jail also on suspicion of first-degree murder, Bay said.

On Sunday shortly after 7 p.m., police and ÃÛèÖÖ±²¥ Fire Department paramedics responded to a report of a check welfare on a man down in the street in the 3600 block of East Ellington Place, said Bay.

The neighborhood is east of South Palo Verde Avenue and south of East 32nd Street.

When paramedics arrived, they took over treatment of the man, who later was identified as Middleton. People were giving Middleton first aid, said Bay. Paramedics took him to the hospital with life-threatening injuries.

Detectives learned that Middleton, who lives in the area, was assaulted by Medina-Luna and Medina. After the assault, both Medina-Luna and Medina ran from the scene, said Bay. She said detectives found out that Medina was suspected of vandalizing mailboxes before the confrontation with Middleton.

Middleton spoke to both men and a fight broke out and Middleton suffered fatal injuries, said Bay.

Investigators also learned that on the same night, at about 7:30 p.m., police went to the 700 block of West Valencia Road to a report of a fight that began inside a residence and then moved out into the street, Bay said. The fight between Medina-Luna and Medina ended when Medina was struck by a vehicle that left the scene, she said.

Both men returned to the residence, and when officers arrived they noticed Medina was seriously injured and he was taken to the hospital by paramedics, Bay said.

Medina-Luna was arrested for domestic violence/aggravated assault with a dangerous instrument, and domestic violence/aggravated assault, Bay said. He was booked into the jail on those charges that night and later released. 

Investigators are asking anyone with information to call 911 or 88-CRIME, an anonymous tipster hotline.