CNN.com Authorities: Mumbai attackers had help * Story Highlights * Sources: Bangladeshi national bought SIM cards for the attackers * Intelligence experts: Terrorists use SIM cards to throw pursuers off trail * Pakistani authorities deny attackers were from Pakistan; blame "non-state" actors * Analyst: Attackers "needed people on the ground who could guide them" >From Brian Todd CNN (CNN) -- The attackers who killed nearly 180 people last week in Mumbai, India, had help from a Bangladeshi national, Indian security sources told CNN sister network CNN-IBN. The Bangladeshi national bought cell phone SIM cards for the attackers at several locations inside India, the sources said Thursday. SIM cards -- subscriber identity modules -- are portable memory-chips that make it easy to switch cell phones. Intelligence experts say they're used by terrorists to throw their pursuers off the trail. Indian authorities believe all the attackers were Pakistanis, specifically blaming Lashkar-e-Tayyiba (LeT), an Islamic militant group based in Pakistan. LeT has denied any responsibility for the attacks, but the sole surviving gunmen told interrogators he was trained by LeT, Indian authorities have said. Pakistani authorities denied the attackers were from their country, instead blaming what they call "non-state" actors. But one analyst who studies India-Pakistan tensions believes this operation was planned and carried out by militants from Bangladesh, Pakistan -- and India. "They needed people on the ground who could guide them and provided the inside dope," said Shuja Nawaz, author of "Crossed Swords," which analyzes the role of Pakistan's military in the country's politics. "Otherwise, the Lashkar doesn't have the capacity to have cased the joints, to have made all these plans and get these people into the target area so effectively." U.S. Secretary of State Condoleezza Rice, who traveled to the region this week to meet with Indian and Pakistani officials, hit hard on the need for Pakistan to root out Islamic extremists inside its borders. The Pakistani leadership must understand "the importance of doing that, particularly in rooting out terrorists and rounding up whoever perpetrated this attack from wherever it was perpetrated, whatever its sources, wherever the leads go," Rice said. Meanwhile, Indian police swiftly handled a "security scare" at New Delhi's major airport early Friday amid heightened security at the nations airports. VideoWatch what was known about the scare » Intelligence reports indicated terrorists may be planning an airborne attack. VideoWatch heightened anxiety after the attacks » "This is based on a little warning which has been received," Indian Air Force chief Maj. Fali Homi said. "That's all, nothing else. We are prepared as usual." Indian officials are also weighing how to tighten security along their coasts, where the Mumbai attackers entered the country. All AboutIndia • Pakistan • Terrorism Links referenced within this article Watch what was known about the scare » #cnnSTCVideo Watch heightened anxiety after the attacks » #cnnSTCVideo India http://topics.edition.cnn.com/topics/India Pakistan http://topics.edition.cnn.com/topics/Pakistan Terrorism http://topics.edition.cnn.com/topics/Terrorism Find this article at: http://edition.cnn.com/2008/WORLD/asiapcf/12/04/mumbai.investigation/index.html Click Here to Print SAVE THIS | EMAIL THIS | Close Uncheck the box to remove the list of links referenced in the article. � 2008 Cable News Network. --------------- Jusfiq Hadjar gelar Sutan Maradjo Lelo Allah yang disembah orang Islam tipikal dan yang digambarkan oleh al-Mushaf itu dungu, buas, kejam, keji, ganas, zalim lagi biadab hanyalah Allah fiktif.