His lawyer, Satyendra Singh did not oppose the CBI's application, saying, "We are willing to cooperate with the CBI in the investigation".
Stating that his government has adopted a "zero tolerance" policy against criminals since the first day of holding office, Adityanath said that the CBI is probing the case which was handed over to it following an order by the state government.
A special CBI court here on Saturday sent, to seven days CBI custody, rape accused Uttar Pradesh BJP legislator Kuldeep Singh Sengar, while the medical examination of the 17-year-old victim was conducted at a hospital here earlier in the day.
On the opposition parties accusing the UP government for "delaying the MLA's arrest", Singh referred to the former chief minister Akhilesh Yadav having "shielded rape accused minister" Gayatri Prajapati.
Rape victim's uncle alleged that his brother was being forced to take the case back and when he refused, false cases were lodged against him.
On Wednesday night, Kuldeep Singh Sengar made a dramatic appearance outside the house of the police chief in Lucknow, in a convoy of 20 vehicles.
USA would not attack Syria over gas attack allegations: Syrian lawmaker
On Saturday, a chemical weapons attack in the rebel-held Syrian town of Douma was blamed on Syrian President Bashar Assad . Security Council, saying the Western powers had violated "the U.N. charter and the norms and principles of global law".
He however rued the fact that his initial demand for a CBI probe was stonewalled by the state and regretted that had this probe been ordered earlier, his brother would have been alive.
The court also ordered to investigate the case strictly in accordance with law and also consider to file an application for the cancellation of bail granted to the other accused in the case.
The CBI officials confirmed that he has not been arrested so far.
Soon after taking over the case, the CBI brought Sengar to its office in Lucknow at around 5 am for questioning. He also emphasised that government will take stringent action against the culprits. The court said that it would monitor the case and directed the CBI to submit a progress report by May 2, when the matter would be heard again. The victim woman, along with her family members, tried to commit suicide in front of Uttar Pradesh Chief Minister Yogi Adityanath 's residence in Lucknow.
He had subsequently died in judicial custody and the autopsy report showed serious injuries on his body.