UN nuclear inspectors have arrived in Syria to investigate claims that it was building a nuclear reactor.
The International Atomic Energy Agency's (IAEA) four person team will spend three days examining the al-Kibar site in the desert in northern Syria.
The site was bombed by Israeli jets in September 2007. The ruins were bulldozed after the attack.
Israel and the US have said the installation was a nuclear plant in the making - a charge denied by Damascus.
Speaking on his departure, the deputy chief of the IAEA, Olli Heinonen - who is leading the team of inspectors - said they would meet their Syrian counterparts on Sunday evening.
After that, he said, they would start "looking for the facts".
Syria has welcomed the inspection but insists that it will be limited to the al-Kibar site.