Story highlights Police think the suspects were planning an anthrax attack

They also say the extremists were recruiting university students to join ISIS

Nairobi, Kenya (CNN) Kenya's police chief says the country's security services have foiled a potentially major terror plot by an unnamed East African terror network with links to ISIS.

The terror plot was aimed at "various targets in Kenya," Inspector General Joseph Boinnet said Tuesday. Police in Kenya and Uganda have so far arrested three individuals: one, a medical student named Mohammed Abdi Ali who was interning at a Kenyan hospital, and the others -- Ali's wife and her friend -- who are now in custody in Uganda. Ali was arrested on Friday.

CNN has not yet been able to independently verify these claims.

The Kenyan police are currently searching for two other medical interns in Kenya who police say are Ali's accomplices.

Police say the interns' terror network contacts spread from Kenya to Somalia, Libya and Syria.

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