Lagos, Nigeria (CNN) -- Nigeria's president will not resign despite currently undergoing treatment in Saudi Arabia for a heart condition, his office said Friday.
President Umaru Musa Yar'Adua and the vice president will continue in their respective roles and the latter will not assume presidential duties, a spokesman said.
Yar'Adua has acute pericarditis -- an inflammation of tissue around the heart -- and is responding well to treatment, said Salisu Banye, the president's doctor.
The illness was diagnosed last week after the president complained of chest pain following prayers at a mosque in the capital, Abuja.
Yar'Adua was taken to the King Faisal Specialist Hospital and Research Centre in Jeddah, Saudi Arabia, where he had his last checkup in August, his doctor said.