The families of two of the three Boston Marathon bombing victims welcomed the capture and arrest of 19-year-old suspect Dzhokhar Tsarnaev Friday night in the Boston suburb of Watertown.

The family of Martin Richard, the 8-year-old boy killed in the bombing offered its thanks to the investigators who worked around the clock on the case and the civilians who offered tips and images that helped authorities zero in on two suspects.

"Tonight, our family applauds the entire law enforcement community for a job well done, and trust that our justice system will now do its job," the family said in a statement released late Friday.

Martin was killed in Monday's blast along with two other. His mother and sister were among some 180 others wounded.

"None of this will bring our beloved Martin back, or reverse the injuries these men inflicted on our family and nearly two hundred others. We continue to pray for healing and for comfort on the long road that lies ahead for every victim and their loved ones," the statement read.

The brother of Krystle Campbell, a 29-year-old restaurant manager killed in the blast, told The Boston Globe he applauds the arrest of Tsarnaev, but said his capture will not bring his sister back.

"I’m happy that nobody else is going to get hurt by these guys, but it’s not going to bring her back," William Campbell III told the paper.

Krystle's father, William Campbell, said she had gone with a friend to watch the race. Her friend was seriously injured in the explosion.

William Campbell III told the Globe his parents are "happy they got the guys, but basically they feel the same."

The third victim in the Boston Marathon bombing was Lu Lingzi, a graduate student at Boston University originally from China's northeastern city of Shenyang.

The Associated Press contributed to this report.

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