NORTH KINGSTOWN, R.I. (AP) — The mother-in-law of the Boston Marathon bombing suspect killed during a gun battle with police says her family is “sickened” by the horror he inflicted.

Judith Russell’s daughter Katherine was married to Tamerlan Tsarnaev, an ethnic Chechen who came to the U.S. from Russia. She says her family realizes they never really knew him. She said in a statement Friday the family can’t begin to comprehend the tragedy.

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