A St. Paul man was sentenced Thursday to more than 24 years in prison for unleashing fatal blows on his unconscious victim at a downtown Minneapolis convenience store.

Terry Williams, 30, pleaded guilty Tuesday in Hennepin County District Court to second-degree unintentional murder in the beating of Lance K. Grant, 24, of St. Paul, on Nov. 27, 2017.

Grant suffered severe skull and brain injuries at Buzz Mart near the corner of N. 5th Street and Hennepin Avenue S. He died June 27 at HCMC.

With credit for nearly 500 days in jail since his arrest, Williams will serve the first 15¼ years of his term in prison and the balance on supervised release.

Store video surveillance showed Williams punching Grant as he was about to leave through the front door, according to the criminal complaint. Williams then hovered over the fallen and motionless Grant and punched and stomped on his head before stealing from his pockets, the complaint continued.

Williams was arrested the next day downtown at the Minneapolis Central Library. He allegedly told police that he was avenging Grant's assault on him the previous day.

The County Attorney's Office said Grant's mother and younger sister gave victim impact statements during sentencing and told the court that he never got to meet his baby daughter, who will celebrate her first birthday Saturday.

Paul Walsh