An aviation official says an Etihad Airlines passenger jet has made an unscheduled landing at a Pakistani airport after a note warning of a bomb on board was found in the toilet. Civil Aviation Authority spokesman Pervez George says police were searching the plane at Karachi airport, but had yet to find any explosives. The plane with around 190 passengers on board was en route from Abu Dhabi to Islamabad, Associated Press reported. George says after landing in Karachi, the plane was taken to an «isolation bay» at the end of the runway. A passenger says all on board were searched as they descended from the aircraft.