ມືປືນກຸ່ມ al-shabab ໂຈມຕີ ມະຫາວິທະຍາໄລ ເຄັນຢາ

Kenyan police officers take cover outside Garissa University College during an attack by gunmen in Garissa, April 2, 2015.

Kenyan police officers take positions during an attack by gunmen outside the Garissa University College as an ambulance carrying the injured are taken to the hospital, in Garissa, April 2, 2015.

A Kenyan Defense Forces tank travels on a road outside Garissa University College in Garissa, Kenya, April 2, 2015.

In this mobile phone image, soldiers from the Kenya Defense Force move behind a thicket in the town of Garissa, April 2, 2015.

Students gather outside Garissa University College after an attack by gunmen, in Garissa, April 2, 2015.

Students of Garissa University College take shelter in a vehicle after fleeing from an attack by gunmen in Garissa, April 2, 2015.

Local residents donate blood at Garissa hospital, April 2, 2015.