A PIA Pakistan International Airlines Airbus A320-200, registration AP-BLS performing flight PK-204 from Dubai (United Arab Emirates) to Lahore (Pakistan), was enroute at FL370 about 190nm north of Karachi (Pakistan) when the crew descended the aircraft to FL290, then turned south to divert to Karachi. The aircraft landed safely on Karachi's runway 25L about 50 minutes after leaving FL370.
The airline's press office reported the aircraft diverted to Karachi due to weather conditions in Lahore.
Ground observers reported the aircraft landed with a cracked windshield.
The occurrence aircraft is still on the ground in Karachi about 58 hours after landing.
On Jun 21st 2017 The Aviation Herald learned (while trying to clarify the conflict between airline press statement and ground observers), that the aircraft indeed suffered a cracked windshield, the repairs take longer than normal due to present weather conditions in order to permit the windshield sealant to set in and avoid bubbles.