Few Clues In Hunt For Iraq's Terror Master

The Guardian reports that months of work and a $25m reward have resulted in few clues in the hunt for Abu Musab al-Zarqawi:

There have been no publicly confirmed sightings of Abu Musab al-Zarqawi, no confirmation of which town he may be operating from, or even evidence to show he is in the country.

According to The Guardian, the hunt for Zarqawi is being conducted differently than the pursuit of Saddam Hussein.

That operation was led by special forces soldiers and intelligence officers, backed up by US troops who spent weeks unravelling the networks of loyalty upon which Saddam relied.

That force has reportedly moved to Afghanistan to search for Osama bin Laden.

The search for Zarqawi rests in the first instance with the US marines, who divulge little about their tactics, although they rely to a large extent on informers in the town.

Why can't a force similar to the force that captured Saddam and hunting Osama bin Laden be set up to find Zarqawi?

UPDATE: The New York Post answers my question:

The U.S. military has created a special commando task force to destroy the vicious terror network controlled by Abu Musab al-Zarqawi — and twice has come very close to killing him, Pentagon officials said yesterday.

Military officials confirmed a report on Fox News Channel that a special unit of CIA operatives and Special Forces Commandos known as Task Force 626 has been assigned to hunting down and attacking Zarqawi's Tawhid and Jihad group.

The new force is smaller than Task Force 121, the team that hunted down Saddam Hussein and is now in Afghanistan looking for Osama bin Laden.

These efforts should be intenified.