The detention without charge of Dr. Wenceslao Mansogo Alo, a medical doctor who is also a prominent human rights defender and opposition member in Equatorial Guinea, for more than five days following the death of a patient during surgery is a source of serious concern, Human Rights Watch and Amnesty International said today. Both organizations are calling for his immediate release. Mansogo is a member of the leadership of the opposition Convergence for Social Democracy (CPDS) party and serves as its secretary for international relations and human rights. He is a medical doctor and owns and runs a private clinic in the city of Bata. He is also a member of the local city council.