Historian Ramachandra Guha was among 30 protesters detained in Bengaluru ahead of their planned protest march against the Citizenship (Amendment) Act today. In tweets to users, Airtel said voice, internet and SMS services have been snapped in some parts of Delhi, including ITO where many newspapers have their offices. The police in more than 10 cities have not given permission to organise protests against the Citizenship (Amendment) Act. Permission for any rally was withheld in Delhi, with gathering of four or more people banned near the Red Fort in central Delhi and other areas in the national capital. Swaraj India chief Yogendra Yadav was detained while on his way to Red Fort. The cities where protests are not allowed also include Bengaluru and Lucknow. Much of the protest against the amended citizenship law has taken place in the north-east, West Bengal and Delhi.