The Home Ministry on Monday issued an alert for Mumbai, Kolkata and Bangalore, saying the three major cities could be targeted by terrorists.
Based on the interrogation of suspected Indian Mujahideen terrorist Salman Ahmed, the Home Ministry asked governments of Maharashtra, West Bengal and Karnataka to take all possible steps to foil any bid by terrorists to strike the cities.
"We are not taking any chances on whatever information we have received. So, we have alerted the concerned state
governments to take all necessary security measures immediately," a Home Ministry official said.
During his interrogation, Salman, who was suspected to be involved in serial blasts in Ahmedabad, Varanasi and
Gorakhpur, confessed that the Indian Mujahideen has set up bases in Karachi, Kathmandu, Dubai and a few places in Middle East under its so-called "Karachi Project".
"He also confessed before the interrogators that IM cadres go to Pakistan either taking the route of Nepal or Bangladesh for training and he had returned from Pakistan only in January last," the official said.
Under the "Karachi Project", IM sends Indian youths to Pakistan for terror training and again push back them to the
country to carry out subversive activities.
Salman, who was arrested on Saturday by Anti-Terrorism Squad of UP Police from Siddarth Nagar, is currently under the custody of Delhi Police.
The 21-year-old man, who is an accused in the 2008 serial blasts in Delhi, is said to be a key member of the Indian
Mujahideen network, which has been involved in a series of blasts across the country.
Police claimed they have recovered a Nepali passport obtained under a fake name and an international SIM card
from Ahmed's possession.
After his name cropped up in the blast cases, police claimed that he moved to Nepal where he allegedly got the passport issued in June 2009. With the help of the passport, which was issued in the name of Mohd Fahad Ansari, the IM operative travelled to Pakistan and other countries.