Dhoni's security beefed up

Police has beefed up security around Mahendra Singh Dhoni after he received extortion letters from a man claiming to be an associate of the country's most wanted gangster. Police said that they have sent more than 45 commandos to Dhoni's house in his hometown Ranchi and have started an investigation into the letters. Meanwhile, addressing media persons in Ranchi, Subodh Kant Sahay said that no one can upset the Indian Skipper.