An anonymous call threatening to kill Prime Minister Manmohan Singh and former Prime Minister A B Vajpayee have prompted security agencies to conduct searches in the National Capital Region to identify the caller,sources said today. The call made from a mobile phone was received at the Delhi Police Control Room last evening,they said,adding the caller threatened to kill Singh and Vajpayee. During investigations,sources said,the number was traced to be active in Ghaziabad. However,they said,searches did not yield much result as the address used to procure the SIM card was found to be fake. The phone number,according to records,belonged to one Ram Avatar residing in Ghaziabad's Sanjay Nagar. Raghubir Lal,Superintendent of Police (Ghaziabad),said a search was conducted in the area but could not find the address as it was fake.
