Kenyan police say they have intercepted a terror group's plans for a "large-scale" biological attack using anthrax.
They have arrested a man, his wife and another woman and have offered rewards for two other men, the BBC reports.
Police said Mohammed Abdi Ali, a medical intern at a Kenyan hospital, was in charge of a "terror network... planning large-scale attacks akin to the Westgate Mall attack" in which 67 people were killed.
Police did not name the network, but said it stretches across the country and outside its borders including to Somalia, Libya and Syria.
They say he was also "engaged in the active radicalisation" of students and helped recruit Kenyans "to join terror groups in Libya and Syria", BBC reported.
Police said the man's network included medical experts who could help organise a biological attack using anthrax.
His wife, Nuseiba Mohammed Haji, a student, was also arrested as was a friend, Fatuma Mohammed Hanshi.
The police said accomplices of Mr Ali had gone in to hiding, including Ahmed Hish and Farah Dagane, who are medical interns.
The police said accomplices of Ali had gone in to hiding.