The Election Commission on Tuesday said the Aam Aadmi Party (AAP) demonstrated in Delhi Assembly on prototype Electronic Voting Machine (EVM) and not on Election Commission of India Electronic Voting Machine (EVM), sources said.

This comes after AAP MLA Saurabh Bharadwaj earlier in the day at a special assembly session of the Delhi Assembly demonstrated how EVMs can be manipulated. He showed how simple it was for an engineering graduate such as himself to rig a voting machine, and challenged scientists to prove him wrong. AAP convenor Arvind Kejriwal had blamed the party's loss in Punjab to the rigging of voting machines.

Bhardwaj, who told the assembly that he had a BTech degree in computer science and that he had worked on microprocessors and micro-controllers, said, "An ordinary engineering graduate like me can manipulate an EVM by working on it for just 10 to 15 days."

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Conducting a mock poll on an EVM machine, Bhardwaj demonstrated how despite giving two votes each to various parties, the finally count showed that the votes of some parties had been transferred to one party.

He said this was possible with a secret code that is assigned to every constituency. Bhardwaj claimed that before voting begins the election officials show that everything is done fairly but after 10 am, they activate the code, which ensures that all votes cast thereafter would go to a particular candidate.

The high voltage proceedings took place in the Delhi Assembly Session with Bharatiya Janata Party (BJP) MLA Vijendra Gupta being marshalled out, after he moved an adjournment motion on the Aam Aadmi Party (AAP) corruption issue which was disallowed by the Speaker

Gupta, who is the Leader of Opposition in the Delhi Assembly was dragged out on the Speaker's order for creating ruckus.

"Mr Gupta is Leader of Opposition but doesn't understand the sanctity of his post," an annoyed Speaker said.

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Earlier in the day, sacked Delhi Water Minister and Aam Aadmi Party (AAP) leader Kapil Mishra filed FIRs against Delhi Chief Minister Arvind Kejriwal and dared him to resign as an MLA and contest elections against him.

"Arvindji, your heart knows what your relationship with Satyendar Jain is. You know what deal I am talking about. You know that if I had not written a letter to the ACB, you would have not sacked me immediately," Mishra said in an open letter. "Today everyone is quiet, but god is with me," he added. With the Aam Aadmi Party (AAP) struggling to recover from the avalanche of controversies, the one-day special session of Delhi Assembly began on a stormy note.

Under intense attack, Delhi Chief Minister Arvind Kejriwal indicated that he would answer the graft allegations levelled against him by Kapil Mishra who was suspended from the Aam Aadmi Party.

"Truth will triumph. Its beginning will be made during the special session of the Delhi Assembly tomorrow (Tuesday)," Kejriwal tweeted amid turmoil in his party.

His tweet came as Mishra, who was sacked by Kejriwal from his Cabinet last Saturday, intensified his attack on the AAP supremo, alleging that a Rs 50 crore deal had been arranged for the Chief Minister's brother-in-law.

The Kejriwal-led dispensation had already dubbed the recent CBI raid at the Delhi Secretariat and issuance of notice to by the Home Ministry to furnish details of its overseas funding at the session as 'political vendetta' by the Centre.