Centre asks states to beef up security at US diplomatic missions

In the wake of the killing of al Qaeda mastermind Osama bin Laden today, the Centre has asked all states to tighten security particularly in places wherever there is an American or a Jewish installation.     In its advisory, the home ministry asked authorities in Mumbai, Chennai, Hyderabad and Kolkata to beef up security around the US consulates there and foil any attempt by anyone to disturb peace there.     Security was also strengthened around the US Embassy and nearby areas in the national capital's diplomatic enclave, sources said.     All states have also been asked to step up security if any Chabad houses is located there as these are hubs of Jewish travellers. The states have also been asked to keep strict vigil on tourist destinations where foreign travellers regularly.     The United States has issued a worldwide travel alert for its citizens, especially those living in Pakistan, soon after President Barack Obama announced that Laden has been killed.