A 26-year-old man will go on trial today for allegedly posting a message on Twitter threatening to blow an airport "sky high".
Paul Chambers denied "tweeting" the message about Robin Hood Airport, in Doncaster, South Yorkshire, on January 6.
Chambers, of Byram Court, Balby, Doncaster, was arrested after the post was picked up on the social networking site by routine investigations.
He pleaded not guilty to a single charge of sending, by means of a public electronic communications network, a message that was grossly offensive or of an indecent, obscene or menacing character.
He will be tried at Doncaster Magistrates' Court.