<p>As authorities in US investigate the mysterious murder of an Indian-origin businessman, new details are emerging about strained relations between members of his family and feud among them over his estate.<br /><br /></p>.<p>Urooj Khan, 46, died of cyanide poisoning under mysterious circumstances last July, just a day after he had received a cheque of USD 425,000 as his prize money after taxes for a million dollar lottery he had won a month ago.<br /><br />He had come to the US from his home in Hyderabad in 1989 and set up several dry-cleaning businesses in Chicago.<br /><br />Initially, Khan's death was believed to be due to natural causes but at the request of a relative, the cause of his death was re-examined.<br /><br />New screening results showed that a lethal amount of cyanide was present in Khan's system.<br /><br />A Chicago judge has allowed exhumation of Khan's body to get more forensic samples that would help investigators narrow down on the possible cause and motive of his death.<br /><br />New details are also simultaneously emerging about strained relations among his family members, who include his wife Shabana Ansari, his sister Meraj Khan, brother-in-law Mohammed Zaman, teenage daughter and a father-in-law who owed tens of thousands of dollars in taxes.<br /><br />Khan's nephew Minhaj Khan told ABC News the family had a feeling something was not right when his uncle died mysteriously.<br /><br />"He was a healthy guy," the nephew said."He worked so hard. He was always going about his business and, the thing is: After he won the lottery and the next day later he passes away -- it's awkward. It raises some eyebrows."<br /><br />"When we found out there was cyanide in his blood after the extensive toxicology reports, we had to believe that... somebody had to kill him," he said.<br /><br />"It had to happen, because where can you get cyanide?" Khan has reportedly not left a will, which could add to the family's legal fight.<br /><br />Khan's brother has filed a petition asking Citibank to release information about Khan's assets to "ultimately ensure" that [Khan's] minor daughter from a prior marriage "receives her proper share."<br /><br />32-year-old Shabana may have tried to cash the jackpot cheque after Khan's death, according to court documents, which also showed that Khan's family is questioning if the couple was ever even legally married.<br /><br />Shabana's attorney said she has a marriage certificate from India that is valid in the US.</p>
<p>As authorities in US investigate the mysterious murder of an Indian-origin businessman, new details are emerging about strained relations between members of his family and feud among them over his estate.<br /><br /></p>.<p>Urooj Khan, 46, died of cyanide poisoning under mysterious circumstances last July, just a day after he had received a cheque of USD 425,000 as his prize money after taxes for a million dollar lottery he had won a month ago.<br /><br />He had come to the US from his home in Hyderabad in 1989 and set up several dry-cleaning businesses in Chicago.<br /><br />Initially, Khan's death was believed to be due to natural causes but at the request of a relative, the cause of his death was re-examined.<br /><br />New screening results showed that a lethal amount of cyanide was present in Khan's system.<br /><br />A Chicago judge has allowed exhumation of Khan's body to get more forensic samples that would help investigators narrow down on the possible cause and motive of his death.<br /><br />New details are also simultaneously emerging about strained relations among his family members, who include his wife Shabana Ansari, his sister Meraj Khan, brother-in-law Mohammed Zaman, teenage daughter and a father-in-law who owed tens of thousands of dollars in taxes.<br /><br />Khan's nephew Minhaj Khan told ABC News the family had a feeling something was not right when his uncle died mysteriously.<br /><br />"He was a healthy guy," the nephew said."He worked so hard. He was always going about his business and, the thing is: After he won the lottery and the next day later he passes away -- it's awkward. It raises some eyebrows."<br /><br />"When we found out there was cyanide in his blood after the extensive toxicology reports, we had to believe that... somebody had to kill him," he said.<br /><br />"It had to happen, because where can you get cyanide?" Khan has reportedly not left a will, which could add to the family's legal fight.<br /><br />Khan's brother has filed a petition asking Citibank to release information about Khan's assets to "ultimately ensure" that [Khan's] minor daughter from a prior marriage "receives her proper share."<br /><br />32-year-old Shabana may have tried to cash the jackpot cheque after Khan's death, according to court documents, which also showed that Khan's family is questioning if the couple was ever even legally married.<br /><br />Shabana's attorney said she has a marriage certificate from India that is valid in the US.</p>