The inspectors headed for a complex called the "Strategic Storage Unit", which an inspector described as "one of the new sites that was given in the declaration", Reuters news agency reported.

Inspectors also resumed work on Wednesday morning after spending the night at a site believed to be connected to Iraq's nuclear programme - al-Qaem, 400 kilometres (250 miles) north-west of Baghdad.

Iraq made its weapons declaration to comply with a UN Security Council that saw weapons inspectors return to the country after a four-year absence.

In New York, chief weapons inspector Hans Blix said he expected to be able to give copies of Iraq's 12,000-page declaration to all 15 Security Council members on Monday.

Washington sparked a row over the document earlier this week by taking charge of copying and distributing it to the four other permanent members of the Security Council - but not to the 10 rotating ones.

The rotating members - who are not nuclear powers - are to receive edited versions of the report.

Return visit

Wednesday saw the weapons inspectors make a second visit to the Karama complex in a northern suburb of Baghdad. The site has been associated with ballistic missile and biological programmes in the past.