HOULTON, Maine (AP) — Jurors have begun deliberations in the trial of a man charged in the fatal stabbings of a boy and two men in the northern Maine town of Amity.

The jury in Superior Court in Houlton will decide whether Thayne Ormsby is guilty of the three counts of murder. If found guilty, then the trial will enter a second phase in which there’s testimony about the mental state of Ormsby, who’s using an insanity defense.

In Maine, murder carries a maximum sentence of life in prison. Those who’re deemed not guilty by reason of insanity are institutionalized.

Ormsby, who’s 23, confessed in a videotaped interview that he killed 55-year-old Jeffrey Ryan, Ryan’s 10-year-old son, Jesse, and a family friend, 30-year-old Jason Dehahn, on June 22, 2010.