According to an article posted on the Pakistani financial daily the Business Recorder:
The Karachi Nuclear Power Plant (Kanupp) has failed to submit the investigation report to the Pakistan Nuclear Regulatory Authority regarding the leakages in the plant even after passage of 17 days.
The Business Recorder says that the plant cannot be restart until the invesigation report has been submitted and reviewed by the government agency.
The Business Recorder gave this description of the incident:
Kanupp was closed down on October 5 last for maintenance purposes but one of the channels, used to carry heavy water for cooling, had to be opened as the temperature was increasing because of less flow of water.
When the pump started again, after maintenance, the heavy water started leaking.