New Delhi [India], September 21 (ANI): The Delhi Airport on Saturday issued an advisory for international passengers after a cyberattack on a third-party service provider affecting check-in and boarding systems at major European airports. 'Due to cyberattacks impacting European airports, including London Heathrow, Europe-bound flights to and from Delhi Airport may experience some disruptions. Air India has issued a statement regarding a third-party passenger system disruption at London's Heathrow Airport, warning passengers of potential delays in the check-in process. Brussels Airport confirmed that the attack late Friday night had forced automated systems offline, leaving only manual check-in and boarding possible. London Heathrow Airport said Collins Aerospace, a global company that provides check-in and boarding systems to several airlines, was facing a technical issue linked to the disruption.