Home Minister P. Chidambram Monday said the Americans had "overdone it" by detaining Bollywood superstar Shah Rukh Khan for two hours at Newark airport in New Jersey, for questioning.

"Had it been for ten minutes or even twenty minutes (of detention for questioning), one can understand it. But one fails to understand how could they hold him for two long hours?" said Chidambaram, talking to reporters on the sidelines of the annual meet of the state chief ministers and the police chiefs on internal security scenario in the country here at Vigyan Bhawan.