The search and rescue operation for Emiliano Sala was resumed on Thursday, police confirmed.
The aircraft carrying the striker from Nantes to Cardiff disappeared on Monday, losing contact with air traffic control near Casquets lighthouse – around eight miles north west of Guernsey in the English Channel.
The search for the plane has been underway since, but has so far turned up nothing and been hindered by difficult conditions.
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Police have said the chances of Sala and the pilot surviving are "slim", but Cardiff City continue to pray for the Argentine, whose club record £15 million ($19m) signing had just been announced on Saturday.