NSA Ajit Doval, who has been tasked with restoring law and order in the national capital, made a second visit to violence-hit areas on Wednesday evening
The number of deaths in Northeast Delhi violence rose to 35, with at least 200 injured after four straight days of brutal violence over the citizenship law, 130 people have been arrested so far.
WhatsApp was used to organise goons from Uttar Pradesh and to identify areas to target, according to Delhi Police sources, reported NDTV.
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Over 50 phones have been seized from the accused. Hundreds of police and paramilitary personnel are patrolling the streets of the region amid reports of sporadic violence today.
Reports of arson and unrest emerged from northeast Delhi's Bhajanpura, Maujpur and Karawal Nagar areas late on Wednesday.
Prime Minister Narendra Modi on Wednesday made his first public statement, calling for "peace and brotherhood".
Delhi Police has filed 18 FIRs and arrested 130 people in connection with the violence, which they say is now under control.