CHICAGO (AP) — Chicago police investigating the mysterious cyanide death of a lottery winner questioned his wife for more than four hours and executed a search warrant on their home but have not said whether she is considered a possible suspect in the poisoning.

Shabana Ansari's attorney said Wednesday that she was subjected to a long session of questioning at a police station in November and detectives searched the family's two-story home in the West Rogers Park neighborhood on the city's North Side. Attorney Steven Kozicki said Ansari maintains she had nothing to do with the July death of her 46-year-old husband, Urooj Khan, and he has no indication that detectives might be looking at her as a potential suspect.

"I wouldn't use the term suspect," he said. "... In any case where a husband dies in that manner, sure they're going to talk to the spouse. That's what they've done. ... I believe that she had nothing to do with his death. She vehemently says that she had nothing to do with his death."