Months ago, a trash bag was found on Boston's Deer Island. It contained the remains of a small baby girl, wearing black-and-white polka dotted pants. Autopsy reports could not ascertain how and why the child died, or who she was.

The baby became "Boston's Baby Doe." The police released thousands of composites of the child in an effort to gain some knowledge about who she was.

It was only last Friday that the police, acting on a tip off, managed to identify Baby Doe as Bella Bond. The child's mother, Rachel Bond, 40, and her boyfriend Michael McCarthy, 35, have been arrested for the crime and appeared in court Monday, according to this report by HNGN.

The child's father was thought to be one person who might have recognized the police composites. But Joseph Amoroso, 32, had never met his daughter, though he said he had spoken to her on the phone a few times. Also Amoroso had never seen the composite of his daughter and did not think she resembled the pictures he had seen of her.

"Mike McCarthy, you're done! You won't last a day!" Amoroso screamed at McCarthy, who is charged with murder in the death of 2-year-old Bella Bond, reported the New York Daily News.

Amoroso had recently returned to Boston from Florida, where he had moved to, hoping to make acquaintance with a daughter he had never seen.

When Amoroso contacted Bond, she kept putting him off, saying that Bella was away. She finally broke down and told Amoroso that McCarthy had killed Bella.

Rachel Bond told investigators that her daughter was being unruly one night in late May and refused to sleep. McCarthy offered to calm her down. After not hearing any noise for some time, Bond went to check , said Suffolk Assistant District Attorney David Deakin.

Bond found McCarthy standing over Bella "with his hand near her abdomen," Deakin said. "When Ms. Bond looked at Bella, her head appeared to be swollen and her face gray." Bond told police that "she knew at that moment her daughter was dead," Deakin said, according to The Washington Post.

"She asked Mr. McCarthy what he had done and he did not tell her, but he said, 'She was a demon anyway. It was her time to die,'" Deakin said in Dorchester Municipal Court, reported the Washington Post.

Amoroso said he regrets not getting to know his daughter.

"I never met her in person," he said. "I was about to and I was so close. I was trying to get back here to actually get custody of her and raise her, and showed up a couple months too late," reports CBS Local.