Sandeep Kumar was removed from the AAP government on August 31 by Arvind Kejriwal.
The AAP in Goa on Monday threatened to file a police complaint after "objectionable" posters showing sacked Delhi minister Sandeep Kumar came up across the state with the party election symbol on it.
Sandeep Kumar, an MLA from Sultanpur Majra in Delhi was arrested last week on rape and other charges following a complaint by a woman who purportedly figured in an "objectionable" CD with him. He was also suspended from AAP after the scandal came to light.
His posters were put up in Panaji, Margao, Ponda, Vasco and Mapusa markets besides other prominent places in Goa with "AAP for Women Empowerment" written on it.
The picture of broom, which is AAP's symbol, has also been displayed on the posters.
"I suspect BJP behind such acts. BJP rules and governs the state (Goa). They should see to it that proper inquiry is conducted into such acts," AAP Goa Convener Walmiki Naik told reporters in Panaji.
The party will file a formal police complaint, Mr Naik said. "AAP condemns such cheap tactics.
"We won't mind people criticising our developmental work or policies but someone stooping down to such a level is unexpected," he said.
He said the resorting to putting up such posters "is the worst example of politics".
AAP has began ground work in Goa for the upcoming Assembly elections where they will contest all the 40 seats.
Sandeep, who is being interrogated by the police, has claimed innocence in the matter.
The former women and child development minister has been booked on charges of rape, transmission of material containing sexually explicit act and taking illegal gratification.
In her complaint, the woman alleged that around 11 months ago, she was raped by him when she had gone to his office in outer Delhi's Sultanpuri seeking help to obtain a ration card.
Sandeep was removed from the AAP government on August 31 by Chief Minister Arvind Kejriwal after the CD purportedly showing him in compromising position with the woman surfaced.