The work is being conducted under the supervision of the International Atomic Energy Agency (IAEA), whose team is installing surveillance cameras at the Isfahan facility. Iranian officials have said that full work will resume as soon as the installation is complete and seals are broken.
All activities at the Isfahan facility had been suspended since November following an agreement between Iran, on one hand, and the United Kingdom, France, and Germany to engage in talks over the nuclear dispute.
Those three EU members, who have been engaged in nuclear talks with Iran, have warned against the resumption of work at Isfahan and said that Tehran could be referred to the UN Security Council for sanctions.
(local and international news agencies)
See also:
"Iran Says EU Nuclear Proposal Unacceptable"
"Iran Pushes Back Nuclear Deadline"