BOSTON (WHDH) -- A Boston man was sentenced to life in prison without parole for killing four people, including a 2-year-old boy, in a drug-related robbery in Mattapan in 2010.

Dwayne Moore was sentenced Tuesday after being convicted Monday of four counts of first-degree murder. He was also convicted of home invasion and armed robbery, but acquitted of three other charges.

Victims said this does not heal their broken hearts.

“September 28, 2010. That was the day my life changed forever,” said Ebony Flonory, whose sister and nephew were murdered.

“At least we’ll have a little peace and to know that the people who did this will pay for it,” said Patricia Washum, whose friend was murdered.

A fifth shooting victim survived, but was paralyzed and is now in a wheelchair. Moore was acquitted of that shooting.

“Can’t do nothing for himself, nothing,” said Eunice Hurd, a friend of the man left paralyzed.

Outside the sentencing, courthouse officers dragged away Moore’s mother, who was apparently upset a photographer took her picture.

Defense attorneys vowed to appear, saying prosecutors got the wrong man and the state’s star witness, Kimani Washington, got away with murder.

During trial Moore’s lawyer described the Washington as a "snake oil salesman" who himself committed the crimes. Washington admitted participating in the robbery, but said he left before the shootings.

“Washington was a participant in this robbery and he is going to pay a very heavy price for that,” said Dan Conley, Suffolk District Attorney.

Washington will be in jail for 16 to 18 years.

For the victim’s families the conviction is only the start of the healing process.

During the sentencing, the judge drew a parallel between the victims in Newtown, Conn. and the youngest victim in Mattapan, saying the 2-year-old boy was just as innocent, his death just as tragic.