Kenyan police have disrupted a cell of extremist medics linked to the Islamic State group suspected of plotting a biological attack on Kenya and recruiting university students to join the group in Libya and Syria, Kenya's police chief said on Tuesday.

A court allowed anti-terrorism police officers to keep Mohammed Abdi Ali, a medical intern at the Wote District Hospital in Makueni County who was arrested on Friday, for 30 days to complete investigations, Joseph Boinnet said in a statement.

Ali's wife, a medical student in Uganda, has also been arrested in Kampala, Boinnet said. Two of Ali's alleged accomplices Ahmed Hish and Farah Dagane, medical interns in the western town of Kitale, have gone into hiding, he said.