Following a complaint by the woman, a case was registered against a person with the Twitter account 'Amendra Kumar Singh', a senior police official said.
The woman journalist had uploaded photos of the protest organised at South Mumbai here organised by Mumbai Press Club along with other media organisations like TV Journalists' Association, Bombay News Photographers Association among others, they said.
A case under section 354(a)1 (outraging modesty), 509 (word, gesture or act intended to insult the modesty of a woman) 506 (2) (criminal intimidation) of IPC has been lodged at Azad Maidan police station and no arrest has been made in this connection, police said.