David Michael Mattson-Fuller, 19, of Austin was sentenced to 21 months in the Minnesota Correctional Facility in St. Cloud on Thursday in Mower County District Court for felony third-degree assault-substantial bodily harm. He received credit for 159 days served.

He also received a concurrent sentence of 18 months in the Minnesota Correctional Facility in St. Cloud for violating probation on a prior charge of felony terroristic threats. He was initially sentenced to five years of probation for that charge on Aug. 25, but pleaded guilty to violating probation on Jan. 17. He received credit for 261 days served.

Judge Jeffrey Kritzer issued the sentences.

Mattson-Fuller was charged with assault on Aug. 28 after he assaulted another inmate in the common area of a pod at the Mower County Jail on Aug. 7. The inmate had bruising on his left rib area, scuffs on his elbows and “knots” on the back of his head.

Surveillance footage from the pod showed Mattson-Fuller as the aggressor. The assault lasted approximately 19 seconds. He pleaded guilty to that charge on Jan. 17.

Mattson-Fuller was charged with felony terroristic threats on April 28 after sending an ex-girlfriend profanity-laced text messages in which he threatened her with violence. He pleaded guilty to that charge on July 24.

A review of Mattson-Fuller’s criminal history shows prior convictions for assault, theft, criminal damage to property, fleeing an officer and disorderly conduct.