BANGOR, Maine (AP) — The trial of a man charged with manslaughter in the death of a 6-month-old-boy in Millinocket, Maine, is due to begin this week.

Jesse Mackin pleaded not guilty in 2016 in the death of Larry Lord Jr., who was the son of his girlfriend. The evidence will be heard by a judge, not a jury, at Mackin's request. The trial begins Tuesday for Mackin, who's was charged with manslaughter.

Mackin was living with the baby's mother in Millinocket at the time. The baby died after being brought unresponsive to a hospital.

The baby was the son of Anthony Lord, who's serving two life prison sentences for a shooting rampage that claimed two lives and injured four others in 2015. Lord said he was overcome with grief over his son's death before the shootings.