Mohamed Sharmake Abdi of Kahawa Barracks was nabbed alongside Abdi Hamid – a Kemu student.
The others arrested at Eastleigh Section 3 are Abdikalif Mohammed Noor, Ahmed Abdullahi Abdi – driver, and Salah Abdi.
DCI said the suspects were demanding Sh5,000 to release the abductees, whom they had held hostage in a car, before they were arrested.
“The three victims of the kidnap ordeal were released while the suspects will be arraigned today,” DCI said on Tuesday.
On Monday, a man claiming to be a NIS officer based in Wajir was arrested with two pistols, six sachets of heroin, and 40g of bhang in Eastleigh.