Sentencing in Longmont stabbing case delayed

Nov. 30—The man convicted in a Longmont stabbing had his sentencing hearing Wednesday canceled after attorneys said they had recently become aware of another assault case against the defendant.

John Mark McKinley, 60, was found guilty of attempted manslaughter and first-degree assault following a trial in July.

McKinley was set for a sentencing on Wednesday in Boulder District Court, but both prosecutors and defense attorneys told Boulder District Judge Thomas Mulvahill that they had only recently become aware of a misdemeanor assault case filed against McKinley.

According to an affidavit, McKinley is accused of assaulting another inmate at the Boulder County Jail in May.

It is the second time McKinley has been charged with assault while at the Boulder County Jail, as he also has a pending second-degree assault case from 2021.

Mulvahill was already considering delaying the hearing due to technical issues related to the court's recording service, and so he granted the attorneys' requests to push the sentencing hearing back to Dec. 20.

McKinley remains in custody at the Boulder County Jail without bond. He faces 10 to 32 years in prison on the first-degree assault charge.

According to police, McKinley stabbed Joshua White in Roosevelt Park on Aug. 28, 2020. White was taken to the hospital with a stab wound to his left chest, but recovered from his injuries.

McKinley admitted to the stabbing but claimed self-defense at trial.

He was originally charged with attempted first-degree murder in addition to first-degree assault, but the jury opted for the lesser charge of attempted manslaughter on that count.