Due to the alerts from Central Security Agencies, on yesterday security has been tightened in Delhi and Hyderabad.It is warned that the Pakisthani based group Lakshkar-e-Taiba is going to do bomb blasts or going to attack market places and heavy rushed areas of Hyderabad on the occassion of Ramzan.All the metropolitian cities in the country are been alerted.CC cameras have been installed in all the market places, Shopping malls and other rushed areas.High security is provided in the areas of Hitech city, Secunderabad Railway ststion, Inteernational airport, Assembly, CM camp office, Secretariat, Railway stations and in inter bus terminals.