French electric company EDF said 100 employees had been "slightly contaminated" by a leak at a reactor site in southern France.

It is the third incident at a French nuclear site in recent weeks and the second at the Tricastin site.

An EDF spokeswoman said the employees were exposed to radioactive particles that escaped from a pipe in a reactor that had been shut down.

The company said the employees were exposed to radiation far below permitted levels and went home, but will still be tested.