NEW HAVEN, Conn. (CBSNewYork/AP) — A psychologist hired by the defense has testified that a Connecticut man charged in a deadly home invasion told him he was repeatedly sexually abused as a child.

Dr. Leo Shea testified Wednesday that Joshua Komisarjevsky told him he was sexually abused from ages 4 to 6 and was also burned and tortured. Shea says one person Komisarjevsky said had abused him admitted it.

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Komisarjevsky faces a possible death sentence if convicted of the home invasion in 2007 that left Jennifer Hawke-Petit and her two daughters dead. He is charged with sexually abusing 11-year-old Michaela Petit.

Shea says medical records show Komisarjevsky suffered five concussions as a child and that Komisarjevsky reported additional concussions to him. Shea also says Komisarjevsky extensively abused drugs such as crystal methamphetamine.

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Authorities say Komisarjevsky and Steven Hayes, both paroled burglars, broke into the Petit family’s home, beat Dr. William Petit with a bat and tied up him and his family. Hayes was convicted of raping and strangling Petit’s wife and killing the couple’s two daughters, who died of smoke inhalation.

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