Bahrain's HRH Prime Minister Sheikh Khalifa bin Salman Al Khalifa was taken to hospital on Friday night but was in stable condition, state news agency BNA said.

"The Prime Minister entered the hospital this evening for medical tests, which were reassuring and culminated in thanks for God and his successful favour," a statement said, without elaborating on the cause of the hospitalisation.

Khalifa, 80, has served as Bahrain's prime minister since 1971. – Reuters