The newspaper added that the pilot was able to raise the alarm signal before falling.
Search teams are currently looking for the missing jet, which they believe could have crashed in the Adriatic.
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Nearly 38,000 runners will hope to complete Sunday's London Marathon making it the biggest event in its 35-year history.
Rain across central Britain with longer, intense downpours with thunder in places this evening. A lucky few will stay sunny and dry.
Planning on going to the London Marathon tomorrow? Read our handy guide first!