PORT ORCHARD — The 18-year-old who threatened to shoot a gun in Kingston High School pleaded guilty and was released from custody Dec. 12.

Matthew Allen Smiley was sentenced to three months in the Kitsap County Corrections Center, the standard sentence. Because he received credit for time served and it was his first offense, Smiley was released after pleading guilty.

“That’s the maximum sentence he could get,” Deputy Prosecuting Attorney Barbara Dennis said.

Smiley was ordered to have no further contact with Kingston High School or the witnesses who reported the threats he made to “shoot up” the school. He will pay about $900 in fees.

If Smiley is charged with another crime, the felony conviction will increase a future sentence.

Smiley was arrested for felony harassment and second-degree unlawful possession of a firearm. He was formally charged in District Court with “felony harassment for making threats to kill.”

The case resulted in the arrest of three juveniles and an adult for threatening the witnesses who reported the threats. The adult, Sebastian Khalil Carroll, remains in custody and is serving time without bail for felony harassment and escape from community custody.