BELFAST, Maine — Enoch B. Petrucelly, 23, of Palmyra on Friday afternoon pleaded not guilty and not criminally responsible to a Knox County Grand jury indictment for intentionally or knowingly causing the death of Michael Petrucelly on Aug. 10 at North Haven.

Standing before Justice Jeffrey Hjelm in Waldo County Superior Court with defense attorney Howard O’Brien III of Portland, Petrucelly was ordered to be held without bail pending a harnish, or bail, hearing.

A date for the bail hearing may be set at the request of the defense attorney, Justice Hjelm said.

According to the court affidavit, Petrucelly allegedly used a knife concealed in a “gentleman’s cane” to stab his 24-year-old brother, Michael, three times in the chest while Michael was sleeping at a friend’s home on North Haven. Enoch said he thought he and his brother were romantically involved with the same woman, according to the court affidavit released in August.

Enoch Petrucelly will have 60 days for observation in a stage three examination at Riverview hospital in Augusta to determine whether he was suffering from mental disease or defect at the time he committed the crime.

Attorney O’Brien said Petrucelly could be found not criminally responsible for his act, one of the pleas he entered Friday.

The defendant already has undergone a stage one observation at Riverview to determine his competence to stand trial, O’Brien said.

The case was transferred from Knox County to Waldo County court because of the availability of a judge.