Police have arrested five suspects involved in Thursday’s attack at a Kenyan university near the Somali border that left at least 148 people dead and dozens injured, reports CNN.

Terrorist group Al-Shabab claimed responsibility for the attack, in which gunmen strapped with explosives stormed the campus of Garissa University on Thursday morning, taunting victims before killing them. Those who survived were able to by fleeing into the woods, playing dead or hiding.

The arrests were announced by Kenyan Interior Minister Joseph Nkaissery on Friday. The suspects have not yet been named.

"Kenya's government will not be intimidated by the terrorists who have made killing innocent people a way to humiliate the government," Nkaissery told reporters. "The government is determined to fight back the terrorists, and I am confident we shall win this war against our enemies."

Nkaissery also said that officials will be able to account for everyone on campus by Saturday. Emergency workers had still been collecting bodies on Friday, while Kenyan soldiers patroled the campus, which has been “closed indefinitely,” said Nkaissery.

"Our security officers are mopping up the college, to ensure it is safe for students to come back to secure their documents and other property," he said.

Meanwhile, the Interior Ministry had posted on Thursday “most wanted” notices for Mohamed Mohamud, the suspected mastermind behind the attack. The reward for turning him in was 20 million Kenyan shillings, or about $215,000.