GMA Exclusive: Alleged Killer's Uncle Speaks Out

July 31, 2007 — -- The uncle of a burglar accused of killing a wife and her two daughters has spoken out against the "horrendous crimes" committed by his nephew and an accomplice, and is offering his prayers and support to the man who lost his family in the attack.

Christopher Komisarjevsky said that his family would not stand quietly by after his adopted nephew, Joshua Komisarjevsky, allegedly killed Jennifer Hawke-Petit, 48, and her daughters Hayley, 17, and Michaela, 11, after robbing and setting their Cheshire, Conn., home ablaze July 23, 2007.

Dr. William Petit Jr., 50, a prominent endocrinologist, was beaten and bound in the basement but managed to escape the fire.

In an exclusive interview with Chris Cuomo Tuesday on "Good Morning America," Komisarjevsky said about his nephew, "What he did was horrific. He destroyed lives. He has destroyed a family, except for the dad.

"This man…is responsible for his own actions. And he must deal with that, and justice needs to be done."

Komisarjevsky and his family attended a memorial service for the deceased Petit women Saturday, and in the interview, offered his sincere condolences to Petit and his family.

The former CEO of public relations giant Burson-Marsteller, Komisarjevsky was at a loss for words as he grappled with his nephew's crimes, trying in vain to find some explanation for how a boy, adopted at a young age and growing up in a loving and religious home, could turn to a life of crime.

"When he was a little kid, he was full of life, full of activity. He loved to draw," he said. "But as time went on and he began to get in trouble, then he really became estranged from the family."

Komisarjevsky said that his brother and sister-in-law are in complete shock. "They are devastated. They just don't know how to handle [the] situation because they don't understand it," he said.

Joshua Komisarjevsky and his accomplice, Steven Hayes, have been charged with murder, rape, kidnapping, robbery, arson and other counts in conjunction with last week's attack. If convicted, they could face the death penalty.

The Komisarjevsky family has an illustrious lineage, including Joshua's grandfather, who was a leading Russian theater director and the son of a princess. His grandmother was a pioneer of modern dance.