Jaishankar, who was arrested yesterday, five days after he escaped from the high-security central prison here, was produced before the Ninth Additional Chief Metropolitan Magistrate (ACMM).
Police sought 10-day custodial interrogation, saying they need to question him regarding his escape and his movements thereafter, ACP (Law and Order) Kamal Pant said.
"Right now, we have taken him to a hospital for treatment as he had sustained injuries on the soles of his feet and hands (during his escape)," he said.
Jaishankar, considered a psychopath, who was recently sentenced to 10 years of imprisonment in a trespass, rape and murder case, hails from Kanyapattanam Konasamudra village in Tamil Nadu's Salem district.
He is facing trial in more than 20 cases in Chennai, Dharmpuri, Hosur, Salem, Tirupattur of Tamil Nadu and Bangalore Rural, Chitradurga, Hiriyur, Kadur, Molakalmur and Tumkur in Karnataka.