ISLAMABAD: Authorities on Thursday issued a threat alert for a potential `massive` prison break in Khyber Pakhtunkhwa after the government announced an end to a moratorium on the death penalty in terrorism-related cases.

`We received terror alert today about a possible prison break in four major prisons of the province,` a senior prison ofhcial in Khyber Pakhtunkhwa province, who saw the alert, told AFP on conditions of anonymity.