Prosecutor: Suspect in Death of Baby Doe 'Said It Was Her Time to Die' The little girl known as "Baby Doe" was killed in her bedroom by her mother's boyfriend — a man who was convinced the toddler was possessed by demons, a prosecutor told a Boston courtroom on Monday. Bella Bond, 2, was found by a dog-walker in a trash bag on Deer Island in Boston Harbor on June 25 and was identified last week. Horrifying details about the girl's short life and death were revealed in court Monday morning as her mom, Rachelle Bond, and Bond's boyfriend, Michael McCarthy, were arraigned. McCarthy was held without bond. Bond was held on $1 million bail. Bond and McCarthy were arrested last Friday. Assistant District Attorney David Deakin told a Dorchester District Court judge on Monday that a "lifelong friend" of McCarthy's broke the case open. The friend told authorities he had lived with Bond and McCarthy for a week or two at some point, and was "appalled by their treatment" of Bella. Michael Patrick McCarthy, left, and Rachelle Dee Bond, right, are arraigned in Dorchester District Court, on Monday in Boston. The judge ordered Bond held on $1 million cash bail and McCarthy held without bail. Pat Greenhouse / The Boston Globe via AP "What troubled him the most was that both of them, particularly Mr. McCarthy, had locked the girl in the closet for 30 minutes to an hour while she screamed to be let out," Deakin said. "Mr. McCarthy told the lifelong friend that she was possessed by demons, and that's why she deserved that treatment." The treatment escalated to deadly force sometime in late May, Deakin said Bond told authorities, when one night, Bella refused to go to bed. Rachelle Bond posted a photo of her daughter Bella to her Facebook page. via Facebook "Mr. McCarthy said he was going to go to the back bedroom and calm her down," Deakin said. When Bond went to check on them, he continued, "she found Mr. McCarthy standing over Bella... with his hand near her abdomen." "She went to her daughter and picked her up and she told police that she knew at that moment that her daughter was dead." No manner of death has been determined by a medical examiner, but it is believed that Bella died of suffocation from blunt force to her stomach, Deakin said. McCarthy allegedly told Bond that Bella "was a demon anyway. It was her time to die." He then allegedly threatened to kill Bond if she reported anything to police. Both Bond, 40, and McCarthy, 35, have criminal records. McCarthy has been charged with murder and Bond is charged as an accessory after the fact. Both were involved in drugs, Deakin said. They will return to court on Oct. 20. The friend who broke the case open told authorities he texted McCarthy, asking where Bella was after noticing a resemblance between the billboards put up across the city of Boston seeking information about Baby Doe. The friend said McCarthy claimed Bella had been taken away by child services, who twice visited Bella over the course of her lifetime but left her in Bond's custody. Rachelle Dee Bond is arraigned on charges of acting after the fact in helping to dispose of the body of her daughter in Dorchester District Court, on Monday in Boston. Pat Greenhouse / The Boston Globe via AP Bond came to court wearing a gray sweatshirt and a hood over her head. McCarthy wore his long hair down by his shoulders. Bond looked down and appeared to wipe tears away as Deakin spoke. After killing Bella, according to Deakin, McCarthy stuffed her body in a trash bag and kept it in a refrigerator for days before dumping her in the Boston Harbor. When her body was found, she was dressed in white pants with black polka dots, and a zebra-print blanket was left in the bag. Authorities found books on "demons and demonology" in the apartment the couple shared, Deakin said. As Deakin described Bella's body being hauled to the Boston Harbor, Megan Fewtrell, a former friend of Bond's who told NBC News that she was Bella's godmother, yelled "You rot in hell!" and was escorted out. RELATED: Girl Found Dead in Boston Identified, Mother and Boyfriend to Be Charged Fewtrell told NBC News that she couldn't understand how Bond could let this happen. "Rachelle, how could you cover that up? How could you help the man who killed Bella?" she asked. "You could have left Bella with me before anything happened." "I do not want people to think that Bella was not loved," she added. "Because she was. Very much so." The mystery of Bella's identity drew worldwide attention and hundreds of tips. RELATED: Baby Doe Tipster Said 'She Deserves a Name' Rachelle Bond and her daughter Bella in a photo posted on her Facebook page. via Facebook Bella's father, Joseph Amoroso, told local media in Boston that Bond told him her boyfriend killed the girl. Amoroso, 32, said he had been living in Florida for the past couple of years, and had never met his daughter. He also wiped tears from his eyes as he sat and listened in court on Monday. Bella had pierced ears and appeared well-nourished at the time of her death. She would have turned 3 last month. Over the weekend, mourners — many of whom did not know Bella — stopped by Deer Island to leave candles, balloons, and stuffed animals in an impromptu memorial for her, NBC affiliate WHDH reported. "I also have a little girl who is the same age as Bella," Kim Marco, of Revere, Massachusetts, told WHDH. "I couldn't imagine some of the things that these people did to her. Even holding it in for that long as a mother."