Alps shooting victim's brother to be questioned over Swiss credit card However, there was an attempt to take money out of the account using an expired credit card a few months ago. Mr Maillaud said investigators believe that Zaid Al-Hili was the person who tried to make the withdrawal but this has not been confirmed. He said: "There's an on-going investigation on that point. That said, these are events that aren't all that recent, and well, it was merely an attempt that failed, so of course interesting, and we'll need to ask him [Zaid] about it, but it unfortunately doesn't give us much about the murder. Zaid was not available for comment on Sunday night. It has already been confirmed that Saad changed the locks on his family home in Claygate, Surrey, to stop Zaid getting in when he left for France last month. A few days later Saad, 50, died alongside his wife Iqbal, 47, his mother-in-law Suhaila Al-Allaf, 74, and French cyclist Sylvain Mollier, 45, on September 5. Zaid has been questioned by police in the UK on a number of occasions, but is solely being treated as a witness after denying any involvement in the slaughter. Now French detectives are keen to speak to Zaid as they examine his insistence that he had no dispute with Saad when apparently there was one. The attack also saw Saad's seven-year-old daughter, Zainab, badly injured, while her four-year-old sister Zeena, was left deeply traumatised. At the weekend Lieutenant-Colonel Benoit Vinnemann, the most senior gendarme in the case, dismissed a report that the killings might be linked to a "fortune" left by Saddam Hussein, the late Iraqi dictator. According to Le Monde, the German secret service had sent their French anti-terrorist counterparts information about "links between Saad al-Hilli's family and the fortune of Saddam Hussein." The newspaper said money left by Saddam prompted "tensions" between Saad and Zaid over the Geneva account. Investigators have estimated that their father's legacy was worth up to £4m. Kadhim, a former factory owner, is said to have fallen out with Saddam's Ba'ath party in 1971 and fled to London with his wife and two boys. One theory is that Kadhim may not have fallen out with Saddam at all and was in fact being used to get money out of Iraq on behalf of the dictator. Saddam withdrew £620 million from the Iraqi central bank in 2003 and is said to have hidden it in bank accounts around the world. German intelligence, along with other agencies, have been tracking the flow of cash from Iraq to the West, including Switzerland.