An Air Malta flight to Manchester turned back to Malta today as a precautionary measure because of abnormal water condensation in a window, which initially led crew to think it was cracked.  

The Airbus A319 was near Sardinia, an hour into the flight, when it turned back.

There was no emergency.

The aircraft landed back in Malta at 4.45p.m.

"After inspection the aircraft was declared as serviceable since no cracks were found. Above-normal water condensation which accumulated between the window panes, caused this alert," Air Malta said.

The airline apologized to its clients and said the issue had been resolved and the same plane was operating the same flight once more.