While the bomb threat at a Karachi-bound PIA flight turned out to be a hoax, another Pakistan International Airlines flight made an emergency landing at the airport minutes after Krishna's departure.
According to officials, a PIA flight going from Islamabad to Karachi had to make an emergency landing in Lahore after the Boeing was hit by a bird.
"The bird hit the pilot's window. The pilot made a safe emergency landing and all 181 passengers on board remained unhurt," a PIA spokesman told PTI.
In the other incident, a Karachi-bound flight was delayed for a couple of hours after authorities received information from an unidentified person that a bomb had been planted in the plane.
"After a thorough search, the alert turned out to be a hoax," the spokesman said.