Congress Vice-President Rahul Gandhi's official Twitter account was hacked on Wednesday and expletives and abuses posted on the handle. The abusive tweets were later deleted.
The Congress said it smacked of "sinister conspiracy and reflected disturbing insecurities of prevalent fascist culture".
One of the illegal posts had abusive language like "my family is a bunch of corrupt....(expletives) retarded... (expletives)".
The hackers also removed Rahul's profile picture and changed the account title from @OfficeOfRG to Retarded gandhi.
"Rahul Gandhi's Twitter handle has been hacked. We will file a complaint with the Cyber Cell of Delhi Police," Congress Media Coordinator Pranav Jha told IANS.
Congress Communication Department incharge Randeep Singh Surjewla tweeted: "Such unscrupulous, unethical and roguish conduct of venal trolls to hack @OfficeOfRG reflects disturbing insecurities of prevalent fascist culture."
"Pre-meditated hacking of @OfficeOfRG smacks of a sinister conspiracy to abuse and intimidate. It stregthens our resolve to fight for the nation," he tweeted.
Surjewala tweeted: "Hacking of@OfficeofRG proves lack of digital safety around each one of us. Every digital info can be accessed, altered, morphed and modified."