The Tucson Police Department arrested a man Sunday morning in relation to a homicide that occurred Friday night near Fourth Avenue.

Graham Karber, 26, is the suspect for the homicide of 29-year-old Amanda Vinson. According to a statement from TPD, Karber has been booked into Pima County Jail and charged with one count of first-degree murder.

Karber and Vinson had been roommates in the same residence, police said.

TPD officers had been stationed for several hours outside a house on Fourth Street Saturday afternoon while looking for Karber.

Officers were outside the duplex house with addresses 411 and 413 E. Fourth St. The officers established a perimeter with boundaries from Fourth Avenue to Third Avenue, and Fourth Street to Hoff Avenue.

Michael Spillman, a bystander near the scene of police activity, said the officers were responding to a tip that Karber was in the vicinity. However, multiple bystanders said the police did not find anyone inside.

“They had literally cops everywhere with guns drawn for hours,” said Lauren Gentzler, a bystander at the scene, “and then they [went] in, and when they came out, they found nothing.”

Michael Spillman said the suspect was not in the house.

A fire truck arrived at the scene at around 6:16 p.m., and firemen proceeded into the perimeter with ladders and checked the roof of the house for the suspect.

Bystanders said the man suspected to be inside was known to be a “heavy-duty drug user” and a “junkie.”

Michael Spillman described Karber as a “close friend” but also a “frenemy.”

He went on to describe some interactions he had with Karber.

“He was really passive-aggressive,” he said. “One time, he had done us a favor, actually. So, he was over at the house, and while he was there, he had stolen some things.”

Lisa Spillman also knew the suspect personally.

“It’s just really kind of sad and sick,” she said.

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