Maj. Gen. Dawlat Waziri, spokesman of the Ministry of Defence (MoD), told Afghanistan's Pajhwok news agency that the suicide bomber walked closed to the cadets' bus and detonated himself, leaving 15 cadets dead and four injured.
The injured cadets had been shifted to hospital, but there was no information about their well-being.
The Marshal Fahim National Defense University is located in the Qargha (or Qargheh) district of Kabul on a 105-acre site on a plateau to the west of the Kabul city centre near Police District 5. It houses various educational establishments for the Afghan Armed Forces.
In April 2014, the university was renamed the Defence University of Marshal Fahim in honour of the former Vice President of Afghanistan, Mohammed Fahim who died of a heart attack on 9 March 2014.
At least 85 people were killed and over 60 injured in a suicide blast on Imam Zaman Mosque in capital Kabul on Friday evening.(ANI)