Delhi police have registered over 100 FIRs and arrested at least six persons in connection with hundreds of “objectionable” posters mushrooming across the capital seeking Prime Minister Narendra Modi’s ouster, sources said on Wednesday.

A police officer said over 2,000 posters saying “Modi hatao, desh bachao (remove Modi, save the country)” were found on walls and poles in several areas of the capital on Tuesday. He said the posters had been removed.

“A van carrying hundreds of such posters was intercepted when it was leaving the Aam Aadmi Party office and we seized the posters. One of the arrested persons told us that he was asked by his employer to deliver the posters at the Aam Aadmi party’s Delhi headquarters,” said the officer.

The Delhi police report to the Union home ministry, now helmed by Amit Shah.

“A special drive to remove the objectionable posters from the walls and poles in different areas of the capital has been undertaken, keeping in mind the G20 summit,” the police officer said.

The arrested include the owner of a printing press and a man who was delivering posters to the AAP office. AAP tweeted several such posters from its official handle, asking how many more FIRs the Modi government will register. The party said Modi was scared of AAP.

“The dictatorship of the Modi government is at its height. What is so objectionable in this poster that Modi ji has filed 100 FIRs over it? PM Modi, you probably do not know that India is a democratic country. So scared of one poster! Why?” the party asked in a tweet.

Special commissioner Dependra Pathak said Delhi Police had registered 100 FIRs while six people were arrested. He said the FIR was filed under sections of the Printing Press Act and the Defacement of Property Act. AAP said the party would launch a “Modi Hatao Bharat Bachao” campaign on Thursday to mark the death anniversaries of freedom fighters Bhagat Singh, Shivaram Rajguru and Sukhdev Thapar.

Delhi minister and AAP’s Delhi unit convener Gopal Raidisplayed the poster at a news conference and said: “An undeclared dictatorship has been imposed in the country.... Tomorrow AAP will through a public meeting move ahead with the slogan ‘Modi Hatao, DeshBachao’ in the whole country.”

He added: “Such anxiety with a single slogan! This is the same honourable PM who was involved in the movement during the Emergency where the slogan ‘Indira Hatao Desh Bachao’ was raised. Then it was a battle for democracy and today the same slogan scares you.”