From November 2001:
"Francois Seznec, a former Gulf-based banker who lectures in Arabic politics and finance at Georgetown university in Washington DC, believes much of al-Qaeda's liquid funds will be held in such centres. "If you want to look for terrorist funds, you will have to look in the banks and money-changers of Dubai," he said.
US investigators believe about half the $500,000 that the hijackers spent on the September 11 plot was sent by Mustafa Ahmad, who is today regarded by investigators as bin Laden's finance chief, via Dubai money exchanges through Citibank in New York and on to Florida.
Such money transfers have given investigators their most solid link to bin Laden's al-Qaeda network. That they were all but undetectable until the terrorist attack reflects the skill with which al-Qaeda used international financial networks."
How much are you willing to bet its changed in 5 years? I'm not willing to bet anything.
If you're going after Dubai, I suggest you go after Citibank too, since its network ultimately delivered the money to the hijackers.