BANGOR — A judge is weighing evidence in the trial of a Bangor man charged with manslaughter in the death of his 3-month-old son.

Both sides delivered their closing arguments Thursday in the trial of Dustin Brown, who’s charged in the death of his 3-month-old son, Xander.

Brown told police the baby went limp during a feeding in November 2012.

The state contends Brown caused a fatal brain injury, but the defense said the baby’s death was a “medical mystery.” An expert testified for the defense that the infant died from cardiac arrest after choking on formula.

The case was tried in front of a judge with no jury in Bangor at the request of the defense. There’s no timetable for Justice William Anderson to issue a verdict.