By Cyrus Ombati
The suspect who is a Somali national was arrested on Saturday in Hulugho area near the Somalia-Kenya border as he tried to flee, police said.
He has since been brought to Garissa where he was identified by witnesses of the killing including two surviving soldiers.
Police say the suspect has confessed he was behind the shooting and that he is a commander in the Al Shabaab ranks inside Somalia.
North Eastern deputy CID boss Eregi Ngatia told the Standard detectives are still interrogating him before he appears in court.
Preliminary findings show the suspect is an explosives expert within the Somalia militants.
“He was arrested as he tried to flee towards Somalia and he has so far been positively identified. He is a dangerous man and we are yet to get his accomplices,” said Ngatia.
Police conducted a search on a house that the man had been staying prior to the Monday attack that sparked riots in the town but details on what was discovered there were scanty.
Other sources said the arrest was made possible following credible intelligence that indicated where the suspect was headed.
The killing of the soldiers prompted a police operation and sparked protests and riots in the town leaving property being destroyed.
A parliamentary group is investigating the incident and reaction to the same.