Mathura: The daylong Janmashtami celebrations began in Shri Krishna Janmasthan and other temples here this morning with Mangal Aarti, and thousands of devotees flocking to offer prayers. <br /><br />Heavy security arrangements have been made with CRPF jawans, Black Cat commandos, PAC jawans and local police drawn from Agra, Kanpur and Jhansi ranges posted to keep strict vigil.
