Attorneys for Carlos Julian Contreras — the 23-year-old who was convicted of killing a Donna teen — are seeking a new trial, court records show.

Contreras was convicted and sentenced on Sept. 29 to 60 years in prison in connection with the shooting death of 18-year-old Genaro Isaiah “Izzy” Castillo.

Castillo was fatally shot on Jan. 12, 2020 and his body was found near Donna Lake by a field worker.

READ MORE: Alamo man found guilty of killing Donna High School student

Court records show a motion for a new trial was filed on Oct. 29, and the motion argues that the case was mishandled twice.

As previously reported, a mistrial was initially declared on Sept. 12 after the defense team learned that prosecutors offered immunity to Contreras’ common-law-wife — Miranda Luna — without disclo

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