"Bangalore is closer to the US than any other city in India. There are many American companies in Bangalore while many others outsource their work to companies based in Bangalore," a senior Home Ministry official said, explaining repeated terror attacks in the city over the years.
Sixteen people were injured in a bomb explosion near BJP office in the city on April 17, 2013.
On December 28, 2005, a professor of IIT Delhi was killed and four persons injured when two terrorists attacked the Indian Institute of Science in Bangalore.
"Any terror strike brings global publicity, particularly in Bangalore. It also acts as a deterrent for prospective investors to stay away from the city," said the official.
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Besides, top leaderships of Indian Mujahideen belong to Karnataka's coastal town Bhatkal and security agencies suspect that several SIMI operatives are active in the state.
Microsoft has seven installations in Bangalore including its research and technical support centres. Cisco has four research and development centres and one sales office. Boeing has its research and technology centre in Bangalore.
McKinsey India has its one of the key offices in Bangalore while Goldman Sachs has resources in city that deals with investment banking, global investment research, operations and technology.