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Eurovision chiefs issue update on Italy winners Maneskin after drugs claims David Bentley
The Eurovision Broadcasting Union, which organises the annual contest, says it is examining video footage that showed Damiano David lowering his head over a table in the green room.
The singer has volunteered to take a drugs test when he gets home.
Viewers questioned what they were seeing when Damiano was seen on camera bending over a table, with some suspecting he had been caught snorting cocaine.
One asked on Twitter: Did someone just do a line live on Eurovision telly?
But the singer insisted he was looking down after another band member broke a glass on the floor.