FALLUJAH, Iraq (AP) _ A series of large explosions rocked this city west of Baghdad on Friday, witnesses said.

The explosions hit the eastern side of Fallujah, a Sunni insurgent stronghold and a ``no-go'' area for U.S. troops. There were no immediate reports of causalities.

U.S. warplanes have frequently targeted the network of Jordanian-born militant Abu Musab al-Zarqawi with attacks in and around Fallujah in recent weeks.