Four terrorists belonging to Pakistan-based Lashkar-e-Taiba, LeT have sneaked into Mumbai recently to carry out attacks during Christmas and New Year festivities. Police have released the photograph of one of them and issued an advisory to the people to remain alert.Addressing a Press Conference last night, Joint Commissioner of Police (Crime) Himanshu Roy said that the four have been identified as Abdul Kareem Moosa, Noor Abu Ilahi, Walid Jinnah and Mahfooz Alam. They are in the age group of 20 to 30years.The police have set up dedicated phone number 022-22633333 to enable the people pass on information about the terrorists. People can also call up at 100 if they spot the one whose photo was released.Roy also said Mumbai police has formed Special cells in a bid to neutralise the four terrorists.On Tuesday, the Centre sounded a terror alert for Mumbai and Ahmedabad following specific Intelligence inputs that the LeT teams may have entered the two cities to carry out strikes.