Former Malaysian prime minister Mahathir Mohamad, 96, has completed all necessary investigations for a medical check-up and will be ready to be discharged from the hospital within the next few days, the National Heart Institute said today.

Mahathir, who has a history of heart troubles, was admitted to the hospital last Thursday for a full medical checkup and observation. The hospital and spokespeople for Mahathir did not say why he had been admitted.

"The team of doctors treating Dr Mahathir is satisfied...