Unnao has hit headlines several times in the last three years for reporting heinous crimes against women.
The SP said that the claims made in the tweet were far from the facts emerging in the post-mortem report and the post was an attempt to create anger.
Heavy deployment of police force has been made at the hospital to ensure the safety and security of the girl.
Two of the poisoned girls died on way to hospital while the third one is battling for life in a Kanpur hospital.
The high court on November 6 issued notice to the CBI on Sengar's appeal against his conviction and jail term and had also asked the agency to respond to his application.
On December 5, the victim was on her way to Rae Bareli for the court hearing when she was set ablaze in her village.
Devender Kishore Pal reiterated that he had no connection with him at all. His brother Nandu Pal too denied having any link with Sengar.
The rape survivor and the advocate were injured on Sunday when a truck hit their car in Rae Bareli.
A CBI team had on Saturday gone to jail in Sitapur, where Sengar has been lodged for over a year, to check the visitors' records and who he has been receiving at the prison.
Priyanka Gandhi had given a call for a state-wide three-day signature campaign starting Saturday as part of a Congress strategy to build pressure to ensure justice to the rape survivor.
Devender was among the three persons, including truck driver Ashish Kumar Pal and cleaner Mohan Shrivas, who was arrested for the accident involving the Unnao rape survivor.
Gandhi targeted Prime Minister Modi for being tight-lipped after a BJP MLA allegedly raped a girl in Uttar Pradesh's Unnao a few months back.
Indian-American protesters displayed banners and posters seeking justice for the minor girl who was gang-raped by six men and then murdered in Jammu & Kashmir's Kathua.
Some of the protesters at Parliament Square yesterday turned aggressive after the Indian tricolour was torn down from the flagpole.
Several women's rights and advocacy groups, civil society and inter-faith organisations have joined hands to hold a rally protesting against the rapes of young girls