Four of the five suspects charged with the murder of 150 people at the Garissa University on April 2, 2015, have been put on their defence after a trial court established they have a case to answer.

Chief Magistrate Francis Andayi approved charges against Mohamed Ali Abdikar, Hassan Aden Hassan, Sahal Diriye, and Rashid Charles Mberesero.

Osman Dagane Abdi was, however, acquitted of all the offences.

Andayi said there was no evidence against Dagane, who worked as a guard at Garissa University when five terrorists stormed the institution killing 148 people leaving at least 79 with injuries.

Mberesero, a Tanzanian national, was acquitted of an additional charge of being in the country illegally, which Andayi said was not proved.

The five suspects went on trial in January 2016 and denied a total of 156 counts. A total of 22 witnesses testified against them including students who survived the attack.

The charges include committing a terrorist act, conspiracy to commit a terrorist act and being members of a terrorist group.

A status conference is scheduled to take place on February 13, ahead of the defence hearing.