Qadri had visited the police station involved in the arrest multiple times since the warrant was issued, most recently in 2017 to apply for a passport, his brother added.
Asked why Qadri was arrested at night, Srinagar police chief Haseeb Mughal told Reuters: “Police were busy during the day.”
The Kashmir Union of Working Journalists condemned the arrest, saying it seemed to be aimed at muzzling the press.
“Qadri was attending the office on a daily basis and there was absolutely no need for carrying out a midnight raid at his residence,” it said in a statement.
Journalists in Kashmir find themselves caught in the crossfire between the Indian government and fighters battling for freedom from Indian rule.
Both sides are stepping up efforts to control the flow of information, with the situation at its worst in decades, dozens of journalists have told Reuters.
India is one of the world’s worst places to be a journalist, ranked 138th among 180 countries on the press freedom index of international monitor Reporters Without Borders, with conditions in IoK cited as a key reason.