In raid conducted at several places in the city, three suspected Al-Qaeda operatives were on Monday arrested by the National Investigation Agency, police said. Police said the three allegedly planned to attack 22 top leaders of the country including Prime Minister Narendra Modi. They were allegedly involved in threatening embassies of various countries in India, they said. Those arrested were identified as M Khareem, Asif Sultan Mohammed and Abbas Ali. While Khareem was arrested from Usmannagar, Asif Sultan Mohammed was picked up from G R Nagar and Abbas Ali from Ismailpuram, police said. Explosive materials were also seized from them.