Witnesses said explosion and heavy gunfire rocked Garissa University College early on Thursday, and an ambulances were already at the scene.
Local media reported that the gunmen have taken hostages inside the complex after raiding the university.
The attack on the university facility began at dawn, Alinoor Moulid, a freelance journalist based in Garissa, told Al Jazeera.
"According to some of the students who escaped, there are around five gunmen and they entered the university dormitory while students were sleeping," Moulid told Al Jazeera.
"It is hard to tell [about casualties] because the area is now cordoned off, and it is heavily guarded," he added.
"At the moment, I can hear sirens, and at some point I could hear an exchange of gunfire."
Al jazeera
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