Is their something fishy in this?

It appears that the Iraqis arrested al-Zarqawi last year but didn't recognize him and let him go.

BAGHDAD, Iraq - Iraqi security forces caught terror leader Abu Musab al-Zarqawi in the Fallujah area last year but released him because they didn't realize who he was, the deputy interior minister said in an interview broadcast Friday.

The deputy minister, Maj. Gen. Hussein Kamal, told the Lebanese Broadcasting Corp., that Iraqi police "suspected this man" and detained him "along with other members" of his group. "Afterward, he was released because we did not know the identity of this criminal," Kamal told LBC. The station said the remarks were made Wednesday but were aired Friday.

What I don't understand about this is how do they now know it was al-Zarqawi if they didn't know it was him at the time? Sounds sort of fishy to me.