North Korea said Friday it was not behind the latest hacking of the computer network of a Seoul-based university hospital, adding that such a claim "lacked knowledge."

The remark by the North's propaganda organ Uriminzokkiri was a response to the National Police Agency, which said earlier this week that Pyongyang hacked into the central control system of the hospital in August 2014, obtaining full control over the network.

Police added it didn't find any patient information leaks as the North's aim seemed to have been causing functional disorder rather than siphoning private information.

North Korea said the announcement is an "unbearable disgrace,"adding the evidence is fabricated.

"Talented hackers never leave their addresses and traces," the organ said. "It is the nature of the puppet to unreasonably blame North Korea for every accident."

Police expressed strong suspicion that the North conducted the attack on the grounds that the Internet Protocol (IP) address where the attack originated coincided with the one from Pyongyang that launched a cyberattack on major South Korean banks and financial institutes in March 2013.

Uriminzokkiri claimed that North Korea was not responsible for the previous attacks as well.(Yonhap)