The wife accused of assisting her medic husband to plot a biological attack in Kenya has been extradited from Uganda and appeared in a Nairobi court.

Police allege Nuseiba Mohammed Haji, a medical student in Uganda and wife of medical intern Mohammed Ali Abdi, was an accomplice in a foiled plan to launch an anthrax attack in Kenya by a cell of extremist medics linked to the Islamic State group.

Haji appeared in court Tuesday as police asked for permission to keep her in their custody for an additional 30 days for investigations. Magistrate Martha Mutuku will rule on the police application on May 16.

Police say two of Ali's alleged accomplices, Ahmed Hish and Farah Dagane, medical interns in the western Kenyan town of Kitale, have gone into hiding.