Tristan Beardsley

A man was arrested Tuesday in the slaying of a 15-year-old boy who was fatally shot in midtown in 2016.

Tristan Beardsley, 19, was taken into custody on Tucson's east side by members of the U.S. Marshals Task Force, said Sgt. Pete Dugan, a Tucson Police Department spokesman, on Wednesday, Nov. 15.

An arrest warrant was issued for Beardsley in connection to the slaying of Sephaul Booker, Dugan said.

Beardsley was booked into the Pima County jail on charges of first-degree murder, armed robbery, aggravated robbery and aggravated assault, said Dugan.

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Booker was shot shortly before 4:30 p.m. May 4, 2016 in a parking lot in the 3700 block of East Fourth Street, near North Alvernon Way, police said. Officers responded to a 911 call reporting the shooting and found the wounded teen.

Officers performed CPR on Booker until Tucson Fire Department paramedics arrived and took over treatment. He was pronounced dead at the scene.

Detectives are continuing the investigation and ask that anyone with information call 88-CRIME, an anonymous tipster hotline.

Contact reporter Carmen Duarte at or 573-4104. On Twitter: @cduartestar