The owner of a large hotel chain has been hit by a cyber attack which targeted its "booking channels".
Concerned customers said they were unable to book rooms while others feared their reservations had been scrapped during the attack on Holiday Inn 's owner Intercontinental Hotels Group.
Among them was Josue Rivera who tweeted on Monday morning: " @HolidayInn is my reservation gone? Or is there a problem with the system? I need help."
