RAPID CITY — A Springfield man has been arrested for a triple assault case that left one dead and two seriously injured in Rapid City.

Allac Dismounts Thrice, 28, was taken into custody for the murder of 39-year-old Richard Montanez on Sept 3. According to prosecutor Megan Krueger, Dismounts Thrice allegedly used a hammer to kill Montanez.

Dismounts Thrice was also charged with attempted first-degree murder for the assaults on two more victims, Jessalynn Cook and Cody Good Soldier, which also took place on Sept. 3 in Rapid City. Court documents state Dismounts Thrice premeditated all three of the criminal acts. The three criminal charges he faces from the alleged incident include one count of first-degree murder and two counts of attempted first-degree murder. Each count he is facing is a felony charge.

If convicted of the charges, Dismounts Thrice could face the death penalty or life in prison without parole for the murder charge, and a prison sentnece of up to 25 years for the attempted murder charges.

On Tuesday, a magistrate judge set his cash-only bond at $1 million. A judge granted Deputy State's Attorney, Mark Vargo's, request to seal the arrest report due to the potential of it impeding the ongoing investigation into the charges.