AUGUSTA, Maine — What caused the deaths of a married couple whose bodies were found in their Winthrop home early Monday is not being released to the public, according to Mark Belserene, spokesman for the state medical examiner’s office.

“The autopsies have been completed but we continue to withhold all information at request of the Attorney General’s staff,” Belserene said in a Thursday email.

The cause and manner is being withheld because the affidavit has been sealed, he said.

Antonio and Alice Balcer, both 47, were killed Monday at their Pine Knoll Road home, and the couple’s 17-year-old son, Andrew Balcer, has been charged with their murders.

Andrew Balcer made his first court appearance Tuesday at the Capital Judicial Center, and District Court Judge Eric Walker sealed the affidavit filed in support of the teenager’s arrest at the request of Andrew Balcer’s attorney, Walter McKee of Augusta.

The judge also ordered Andrew Balcer to undergo a psychological evaluation in anticipation of a hearing to determine whether he will be tried as an adult. Andrew Balcer was ordered to be held without bail at Long Creek Youth Development Center in South Portland until trial. The teenager’s next court appearance is scheduled for Nov. 17.

A neighbor of the Balcers also called 911 in response to a frantic person banging on their door and pleading for help. The neighbors’ call came at 2 a.m. Monday or about 15 minutes after the original 911 call was made from the house, the Boston Herald reported Wednesday.

Prosecutor Assistant Attorney General Meg Elam declined on Thursday to comment on the report or about who investigators believe was knocking on the neighbor’s door.

“I will have no comment on the case,” Elam said in an email.

Department of Public Safety spokesman Stephen McCausland said he had no information about the reported knock on the neighbor’s door.

“I have no new info on the case,” McCausland said in an email. “Anything from this point on will come out in court proceedings.”

Alice Balcer worked at the Winthrop Veterinary Hospital. Her Facebook page says she was a receptionist and veterinary assistant and previously had worked at the Kennebec Valley Humane Society.

“Yesterday we lost a valued and beloved former staff member, volunteer, committee member, friend and tireless advocate to animals in our community,” the Kennebec Valley Humane Society posted Tuesday on its Facebook page. “Ali spent more than a decade working with animals and inspired those around her to always do their absolute best. She was a mentor and friend to our staff and volunteers. Her passion, dedication and laugh will be sincerely missed.”

Antonio Balcer was retired from the U.S. Coast Guard and was a member of the Exiles Motorcycle Club. He was known as “The Rev” and served as a road captain and webmaster for the organization, which bills itself as the oldest motorcycle club in Maine, according to its website.

A special memorial is planned for the couple, and club members are meeting this week to discuss when, a club member Tony of Etna said Thursday. He declined to provide his last name.

“Some of the brothers are taking this pretty bad,” Tony said earlier this week. “They say time heals all wounds. I know from experience that is not true. It doesn’t, but you learn to live with it.”

He said club members “will feel the effect for a long time.”

“It’s not the grief we’re working to get past, grief is a part of life, it’s the shock,” Tony said. “It’s multiplied by the manner.”

As road captain, Antonio Balcer, who joined the group just over three years ago, “led the pack” and would make decisions about road trips and destinations for club outings, Tony said.

Antonio Balcer was an ordained minister, and he performed a number of weddings for club members, friends and others. He was a good listener, had empathy and lived his life as if he was on a mission from God, said Pastor Steve Nute of Nealley’s Corner Church in Hampden, where Balcer taught a Wednesday night Biker Bible Study.

“Tony gave to a lot of people in need. He often used a third party because he didn’t want the pat on the back,” Nute said. “He has been known to jump on his bike and ride hundreds of miles just to comfort someone in distress. He isn’t any Mother Theresa, but he lived exactly as he said.”

Tony of Etna added, “It’s no big secret who he was.”