More blasts rock Baghdad

Thunderous explosions rocked central Baghdad today, but the cause was unknown.

Several large blasts and some gunfire were heard.

There was no sign of smoke emanating from the US-controlled Green Zone.

Police sealed off Saadoun Street, which includes the square where the statue of Saddam Hussein was hauled down when US troops entered the Iraqi capital last April.

A US helicopter landed in the square and evacuated at least one wounded person as American troops and military vehicles provided security