The funeral for a slain Michigan State Police Trooper was Saturday in Manistee at Mainstee High School.

Troopers, police and community members along with family packed the school auditorium to say good-bye to Trooper Paul Butterfield

Butterfield was shot during a traffic stop Monday in Mason County's.

Gov. Rick Snyder also attended the funeral.

Read: Gov. Snyder orders flags lowered for slain state trooper

The Saturday afternoon service for Butterfield featured an honor guard and military salute.

Nineteen-year-old Eric Knysz was arraigned Friday on homicide, using a gun during a felony, car theft and habitual offender charges.

He was appointed a public defender.

Authorities accuse him of shooting Butterfield in the head on Monday in Sherman Township, about 80 miles north of Grand Rapids.

Twenty-year-old Sarah Knysz has been charged with helping her husband try to escape. Sherman Township, about 80 miles north of Grand Rapids.

Story: Michigan trooper shot during traffic stop dies

Knysz faces a mandatory no-parole sentence if convicted. His wife, Sarah Knysz, 20, faces two charges related to driving away from the scene with him.

Bond was set at $250,000 for Sarah Knysz, who appeared by video camera from the county jail.

Eric Knysz was injured while exchanging gunfire with police as officers closed in on the couple some 15 miles from where Butterfield was shot. He's in a Traverse City hospital but was expected to appear in court Thursday.

Prosecutor Paul Spaniola said Butterfield regularly handled cases in Mason County, especially following up with sex offenders to ensure they were complying with their many restrictions.

"He had a very soft spot for animals. He was a hard worker. He did everything by the book," Spaniola told Wednesday.