RAWALPINDI: The Pakistan Airports Authority (PAA) has extended the closure of its airspace to Indian-registered aircraft, according to a NOTAM (Notice to Airmen) issued on Friday.

Pakistani airspace has remained closed to Indian aircraft since April 24 in a tit-for-tat move after India in a controversial move unilaterally suspended the Indus Waters Treaty (IWT).

The ban will now remain in place until 4:59am on Aug 24, according to the authority.

The NOTAM issued by the PAA reads: `Pakistan airspace not available for Indian-registered aircraft and aircraft operated, owned, or leased by Indian airlines/operators, including military flights.