Testing determined that the baby formula in the bottle contained heroin. An autopsy determined that the baby died from opiate poisoning.
A grand jury returned manslaughter indictments against Barry, 30, and Cyr, 26, on Thursday. Cyr also was charged with one count of reckless endangerment of a child.
Barry’s lawyer, Liam Scully, said that it was unclear who put the heroin in the baby’s bottle and that Barry denies any wrongdoing.
“He was devastated by the death of his daughter and is coping with that tragedy the best that he can,” Scully said.
Cyr’s lawyer didn’t immediately return a call seeking comment Friday.
Barry and Cyr are due back in court Nov. 8 for a pretrial conference.