New Delhi, Nov. 25 -- New DelhiThe Delhi Police on Monday arrested 22 students and detained one more for allegedly blocking a road, obstructing police, and "using chilli spray" on security personnel during a protest at India Gate a day earlier. Most of those held are Delhi University students who had gathered at the C-Hexagon to protest rising air pollution under the banner of the Delhi Coordination Committee for Clean Air. Sunday's demonstration escalated after a clash with police, and several students later protested outside Parliament Street police station, where more detentions followed. Two FIRs have been registered. The first, names eight students, including the apprehended minor, under multiple sections of the BNS, including assault on women, voluntarily causing hurt, criminal conspiracy, obstructing public servants, and disobedience of lawful orders as well as Section 197 of BNS which deals with "imputations and assertions that are prejudicial to national integration". According to the FIR, accessed by HT, police had deployed personnel with loudspeakers after learning from social media that groups such as AISA and JNU collectives planned to assemble near India Gate. Around 4.15pm, the FIR said, protestors gathered with banners, shouted slogans, and frightened visitors. When police asked them to disperse, they allegedly crossed barricades and moved towards the C-Hexagon. The FIR states they raised slogans in support of Madvi Hidma, a Naxal leader killed last month. Police said the protestors "deliberately" ignored warnings, blocked traffic and created a volatile situation. A police officer alleged that a protester handed a bottle to another demonstrator, who sprayed it in her eyes. "All of them did this in collusion," the FIR reads, adding that male protesters "molested and abused" female personnel. Deputy commissioner of police (New Delhi) Devesh Kumar Mahla said: "Several protesters scuffled with the police and many of our personnel were injured. They sprayed chilli and other substances to attack police," he said....