Anand Teltumbde surrendered before the National Investigation Agency on Tuesday afternoon.
Navlakha was one of the five human rights activists arrested last month.
Bhima-Koregaon Case: Bombay HC Pulls Up Maharashtra Cops Over Press Conference On Arrested Activists
The court observed that the cops could not publicly speak on a matter that was sub-judice.
'Assault On Free Speech': All You Need To Know About The Arrests Of Human Rights Activists Across India
Here's what has happened so far after the police arrested Sudha Bharadwaj, Arun Ferreira, Varavara Rao, Vernon Gonsalves and Gautam Navlakha.