PONTIAC, Mich. -

One of three men accused of firing on a group of nearly 300 people at a pre-Christmas roller-skating party has been sentenced to 21 to 70 years in prison.

Tre-Andis Jamison of Pontiac was sentenced Wednesday in Oakland County Circuit Court.

Judge James Alexander said the 21-year-old participated in a "cowardly act" that wounded six people.

Jamison was convicted Aug. 7 on multiple charges connected to the Dec. 23 shooting at the Rolladium Skating Center in Waterford Township.

Nineteen-year-old Robert Lee German of Pontiac faces possible life in prison on charges including six counts each of assault with intent to murder.

He faces a pre-exam conference Monday.
Eighteen-year-old Cheyenne Ingram faces more than a dozen counts, including conspiracy to commit murder.

He'll be sentenced Sept. 12.

Watch: Gunmen open fire on crowd at Rolladium Skating Center