Detectives investigating homicide, one man dead

TUCSON, Ariz. - Tucson Police are investigating a homicide that happened near E. Monte Vista Dr. near N. Flanwill Blvd. early Tuesday morning.

According to TPD, officers located a man in the roadway with obvious head trauma. After paramedics attempted to render aid, the man was pronounced dead at the scene. He has been identified as 29-year-old Mark Garity.

An autopsy revealed that the trauma Garity received was from a gunshot.

Detectives continued this investigation and learned that Garity was last seen with his girlfriend's brother, 21-year-old Vincent Detwiler, and a male friend of Vincent's.

Detectives learned that Detwiler and his friend were visiting from San Bernardino, California and had since returned there. TPD then contacted the San Bernardino Police Department for assistance in locating Detwiler. SBPD located him on February 28.

Homicide Detectives with TPD traveled to San Bernardino and began to collect evidence. After searching Detwiler's vehicle, it was apparent that the murder took place inside the vehicle.

Detwiler later admitted his involvement in the murder and was arrested on one count of Second Degree Murder.

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