"Dr Satish surrendered himself in the anti-corruption court this afternoon. We will seek his remand for interrogation," SSP, Gorakhpur, Anirudh Sidhartha Pankaj said.
"Apart from this, evidence gathering is going on," he told PTI.
Circle officer of Cantt police station Abhishek Singh said, "The court has sent Dr Satish to jail. Police have sought a remand of two days from the court for interrogating him."
Before Satish's surrender, the police had arrested four of the nine people named in the FIR related to the death of over 30 children within 48 hours beginning August 10.
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Last week, the Uttar Pradesh police had nabbed Sudhir Pandey, a clerk of the BRD Medical College, in connection with the deaths.
The UP police on September 2 arrested Dr Kafeel Khan who had been earlier removed from his post in the state-run hospital.
The Special Task Force of UP police had on August 29 arrested the former principal of the college, Rajiv Mishra, and his wife, Purnima Shukla.
Mishra was suspended as principal of the medical college on August 12 after the deaths were reported. He resigned thesame day taking moral responsibility.
There were allegations that the deaths occurred due to disruption in oxygen supply as the vendor had not been paid for several months.
Mishra was accused of sitting over the issue of payments to the vendor supplying oxygen gas to the hospital.
The medical college attracted global attention when more than 60 children, mostly infants, died at the hospital within a week last month. The issue also acquired a political colour with the opposition attacking the government over it.