Somali based al-Shabaab militants are warning of more attacks on Kenya.
The group says it will make the country's cities "run red with blood".
There have been five arrests following the massacre at the country's Garissa University which left 148 people dead.
The terrorists reportedly targeted Christian students, allowing Muslims to flee.
Meanwhile, Uganda is on high alert amid reports of a planned terrorist attack at one of the country's Christian universities.
The neighbouring country has stepped up security and a squad of over 40 anti-terrorism officers have been deployed at the Uganda Christian University campus near the capital Kampala.