A sign for the National Institute of Radioelements in Fleurus
© AFP/BELGA/File Virginie Lefour

BRUSSELS (AFP) - "The residents of this zone can once again consume fruit and leafy vegetables from their gardens," said a statement, after the results of more than 250 tests had come in.

The leak, judged to be the most serious ever in Belgium, occurred on August 22 at the Institut des Radioelements, a laboratory in Fleurus that makes radioisotopes used in medical imaging and cancer treatment.

On Monday, hundreds of children underwent thyroid gland tests on their first day back at school, but none were deemed to have suffered contamination from the leak. In all, 1,320 people underwent tests, the ministry said.

"The level of residual waste continues to diminish, which comforts us in our decision to lift the precautionary measures," the interior ministry said.

"The national nuclear and radioactivity urgency plan remains active, at its lowest level."

The measures were imposed several days after the leak was found, as Belgian authorities at first judged the incident to be harmless to people and the environment.

©AFP