A judge sentenced one man to prison on Tuesday, Nov. 30, and accepted a guilty plea from another man in separate cases, on charges they each sexually assaulted a child.

Adam Grierson, 35, of South Thomaston, was sentenced Nov. 30 to 12 years in prison for five counts of gross sexual assault and one count of unlawful sexual touching. The victim in the sexual assault was a child younger than 12 years old, which occurred from 2014 through 2019.

Grierson was initially charged in May 2020 with 25 counts of gross sexual assault, one count of unlawful sexual touching and one count of aggravated assault. The other counts were dismissed as part of the plea agreement reached between the district attorney’s office and defense.

In addition to the prison term, Grierson will be on supervised release for 25 years after he is out of prison. He must register as a lifetime sex offender, and must undergo mental health and sex offender counseling upon his release. Grierson will be prohibited from having contact with anyone younger than 18, except for his child.

Justice Daniel Billings agreed to a request by Grierson to begin his prison term on Dec. 27, so that he can spend this Christmas with his child. Grierson has been free on bail.

Grierson was convicted based on what is known as an “Alford” plea, which means he did not admit guilt, but acknowledged the state had enough evidence to convict him.

The victim spoke at the hearing, noting the trauma from the sexual assaults led to the victim dropping out of school. The victim’s family supported the plea deal.

Then Rockland Detective Sgt. Joel Neal, now the city’s interim police chief, was the investigating officer. Deputy District Attorney Christopher Fernald prosecuted the case. Jeremy Pratt was the defense attorney.

Grierson was also convicted in 2014 to 15 months in jail, with all but 60 days suspended, for one count of gross sexual assault. In that case, he was convicted of having sex with a female inmate in 2012 while he worked as a Knox County Jail corrections officer. He was also placed on probation for two years.

In October 2015, he was sentenced to serve eight months for violating probation for a domestic violence assault conviction.

A second sex assault case was also heard Nov. 30 in the Knox County court.

Richard Squires, 40, pleaded guilty to one count of gross sexual assault against a child younger than 14 years old in October 2018.

Squires had been arrested by Rockland police in February 2019 and has been held in jail since his arrest.

No sentence agreement was reached between the district attorney’s office and defense. Justice Daniel Billings said sentencing will be held in January. The maximum sentence for the offense is 30 years in prison.

According to the police affidavit filed by then Rockland Police Detective Neal, the father of the victim alerted police about the alleged assault after he received a text message by mistake from his child, who intended to send it to Squires.

Prosecutor Fernald said there were text messages and photos sent by Squires to the victim.

Squires is represented by attorney Andrew Wright.