The Inspector's father Narottam Sharma said he was sad at the comments made by Singh, who has given a cheque of Rs ten lakh to the family after the officer's death.
"We will not accept the cheque. He is talking rubbish," the senior Sharma said.
Raising questions over the encounter in Jamia Nagar in which the Inspector and two suspected Indian Mujahideen terrorists were killed, Singh has said Sharma was transferred from Special Cell before the encounter took place.
Singh, who offered a cheque to Sharma's family, had also visited Jamia Nagar and demanded a judicial probe into the encounter.
"My son was not transfered from Special Cell. Who told him? How can a responsible leader like him can say such things?" Sharma asked.
Delhi Police spokesperson Rajan Bhagat also said Sharma was not transfered from the Special Cell, the elite anti-terror wing of Delhi Police.
Meanwhile, a group of people protested outside Singh's residence at Lodhi Colony here and shouted slogans against the Samajwadi Party leader for his comments on Sharma.