Aamir Khan, who has been criss-crossing the country in disguise to promote his new film "3 Idiots", has been denied permission to spend a day with the Indian Army's cadets at the Officers Training Academy (OTA) in Chennai, Tamil Nadu.

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"The film star had sent a request to the defence ministry to spend a day at OTA. But it has been declined and the ministry has not given any reason for it," sources said.

Aamir wanted to interact with the cadets and wanted to see their lives from close quarter.