The party also attacked the BJP-led Haryana government over the killing of two Dalit children in Ballabgarh and the death of another Dalit teenager under mysterious circumstances in the state.
AAP legislators Saurabh Bhardwaj, Vishesh Ravi, Rakhi Birla, Hajarilal Chauhan and senior leader Ashutosh met police officials at Central Delhi's Prasad Nagar police station in this regard.
"The police told us that they will first inquire into the complaint," Bhardwaj said.
"The police told us that they need to take permission from the higher-up as filing any case under the SC/ST Act requires approval from a DCP-rank officer. We have told them the stature of V K Singh as a minister should not impact the fate of the FIR," he said.
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Singh's statements over the Dalit killing triggered a row yesterday when he said, "For everything... Like if somebody throws a stone at a dog, then the government is held responsible... It is not like that."
"BJP and RSS are inherently anti-Dalit and anti-minorities and that's why such statements are being issued," the AAP leader said.
The delegation led by AAP MLAs from reserved constituencies also met P L Punia, chairman of the SC commission and vice-chairman Rajkumar Verka, demanding action against Singh for the comments made by him.
"We met P L Punia as well as Rajkumar Verka and both have assured us that action would be taken against Singh. They told us that by November 2, an FIR will be registered and they will call the DCP of Delhi Police to ask him on what sections a case could be registered," Birla said.