A flight steward of Pakistan International Airlines (PIA) purportedly disappeared in Canada not long after the carrier's flight PK-798 arrived in Toronto on Friday.\u00a0 As per sources, the steward loaded up the PIA departure from Islamabad and vanished in the wake of arriving at Toronto. The issue was brought to the notification of PIA's station chief in Canada who later educated the air terminal authority about the airline steward's nonattendance without hinting his seniors. Must Read: PTA Aims to Make Offline Calls Cheaper for Pakistanis The sources said the aircraft the executives had considered the issue and dispatched a departmental investigation into vanishing of the group part. PIA likewise educated the Canadian migration specialists about the missing of the group part. A representative for Pakistan International Airlines said on Sunday that the steward had disappeared on Friday after the flight arrived in Toronto. "He has still been missing," he added.