Mumbai police claimed to have cracked terror e-mail case, arresting 15 persons for their alleged involvement in Delhi, Ahmedabad, Surat and Bangalore blasts.Those arrested include Mohammad Azghar (31), Mohammad Shaikh (24) and Asif Bashiruddin Shaikh (22). Police says these men visited Mumbai in July to conduct a survey on possible targets.The key suspect worked for several years with an MNC, earning an estimated annual salary of Rs 19 lakhs, police sources sayWith these arrests, the total number of people held by Mumbai police in connection with the blasts went up to 20. Some other persons were also said to have links with blasts that have occurred since 2005.However, the police are yet to arrest Riyaz Bhatkal alias Roshan Khan, the founder-member of Indian Mujahideen (IM) which is suspected to be behind the blasts in different cities in recent months. The police have recovered explosives and arms besides laptops, pen drives from the arrested persons.
