Ahead of the finalisation of the chargesheet in the November 26 terror strike case, medical tests were conducted on Mohammed Ajmal Amir Kasab [Images], the lone surviving terrorist, in Mumbai [Images] on Tuesday.

"We do not want to take any risk. Several medical tests, including ECG, blood pressure and stress test, were done on Kasab and he was brought back to police lock-up on Sunday evening. He was in the St George hospital during the last week," said an official.

"As we are finalising the chargesheet into the terror strikes, we wanted to ensure that clinically Kasab is fit and he has not been beaten up or roughed up during the interrogation," the official said.

Kasab was taken to the hospital on Wednesday night and was brought back to the police custody on Sunday evening. "He was brought back to police custody after conducting all the necessary tests," said Joint Commissioner of Police Rakesh Maria [Images].