The Markaz of the Tablighi Jamaat group in the cramped neighbourhood was sealed and thousands of followers, including some from Indonesia, Malaysia and Bangladesh, were taken into quarantine after it emerged they had attended meetings there in mid-March.
The police had initially filed a case against Maulana Saad Kandhalvi for violating a ban on big gatherings.
“Delhi police had filed a first information report earlier against the Tablighi chief, now section 304 has been added,” an officer said, referring to culpable homicide in the penal code, which carries a maximum punishment of a 10-year prison term.
A spokesman for the Tablighi Jamaat group, Mujeeb-ur Rehman, declined to comment saying they had not confirmed reports about the new charges.
The Tablighi is one of the world’s biggest Sunni Muslim proselytising organisations with followers in more than 80 countries.
Authorities said at the beginning of the month that a third of the nearly 3,000 coronavirus cases at that time were either people who attended the Tablighi gathering or those who were later exposed to them.
India’s tally of coronavirus infections has since jumped over 12,000, including more than 400 deaths, as of Thursday