North Korea ? North Korea allowed United Nations monitors back into their main nuclear site Tuesday, but it was unclear whether they had fulfilled a pledge to resume disabling the facilities in line with a six-nation deal.

A diplomat in Vienna familiar with the International Atomic Energy Agency’s work at the site said the agency’s 3-member team had resumed monitoring the site, including reapplying seals the North had ordered taken off and remounting IAEA cameras. He demanded anonymity because he was not authorized to discuss the issue publicly.

Two months ago, North Korea stopped disabling the Yongbyon nuclear facility in anger over U.S. demands that Pyongyang accept a plan to verify its accounting of nuclear programs as a condition for removal from a blacklist of countries accused of sponsoring terrorism.

Until late last week, the North had threatened to reactivate the plutonium reprocessing plant at Yongbyon.