The People's Liberation Army Air Force denied on Sunday it had used a Xi'an Y-20 military transportation aircraft to take supplies to Pakistan.

After seeing a large amount of information on the internet about a "Y-20 transporting relief supplies to Pakistan", the Air Force said in a statement such claims were untrue.

The Air Force also posted several screenshots of photos and words that shared the incorrect information, with each stamped with the red word "rumor".

"The internet is not beyond the law! Those who produce and spread military-related rumors will be held legally responsible!" it added.