The central prison was raided by police in the early hours of Thursday morning, according to reports.
It is believed that a raid took place at around 1am, “in the wake of criminal actions recorded in recent days”.
However, current reporting states that no arrests were made as a result of the raids.
Cyprus has been subjected to an increased number of firearm-related incidents of late, with it believed that the incidents are related to underworld activities.
Shots were fired at a parked car in the Nicosia suburb of Aglandjia on Monday as part of an attempted murder. The would-be victim was reportedly a friend of Alexis Mavromichalis, who himself was shot dead on his balcony in October.
On Wednesday, gunshots were reported in the village of Yeri, outside Nicosia.
Police spokesman Christos Andreou had described the situation as a “very serious matter”.