A radiation leak into drinking water at an atomic power plant in the south of India is being investigated.
Fifty-five workers have undergone medical treatment for excessive exposure to radiation, after tritium seeped into a water cooler at the plant on India's west coast - near the holiday destination of Goa.
Officials at the well-protected plant say the leak may have been deliberate.
The director of the plant says the 55 workers are back on duty, and the incident has not affected the public, safety, health or the environment.
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