Prominent Aam Aadmi Party leader Kumar Vishwas has alleged "character assassination," after the Delhi Commission for Women summoned him on a complaint by a woman volunteer of his party.

The woman alleges Mr Vishwas is ignoring repeated requests to make a public clarification that they were not in an "illicit relationship" while campaigning for last year's national elections in Amethi, Uttar Pradesh, where he contested against Congress Vice-President Rahul Gandhi.

Kumar Vishwas alleged political rivals are trying malign him and his party. "Na hum sahib se darenge na sahib ki party se darenge (Neither sahib nor his party intimidates us)," he said, referring to Prime Minister Narendra Modi and his party, the BJP.

The woman volunteer says she has been abandoned by her husband on account of rumours of an affair with Mr Vishwas. "I have just asked him to come forward, make it clear publicly that nothing happened between us. Why can't he do that?" she asked adding, "I'm neither the BJP's agent nor the Congress."

Kumar Vishwas said it was for the police to help the woman against the people maligning her. "She wrote to me saying 'Bhaiya' (brother) I have filed a complaint, what should I do next? We told her , consult the AAP  legal cell," Mr Vishwas said.

As the Congress and the BJP rushed to attack AAP, Mr Vishwas also said, "We know that BJP and Congress are in pain due to results of Delhi polls. One party was wiped out, the other was reduced to three."

The AAP leader has threatened to sue for defamation and denied receiving a notice from the Delhi women's panel, headed by Barkha Shukla Singh, who had contested elections as a Congress candidate.

"You can run any story against us but please don't malign our families. Please spare our families from these unsubstantiated, baseless stories. It pains us and our families," said AAP leader Sanjay Singh today.