Three terror suspects among them a Briton, a Kenyan and a Danish were on Wednesday released without any charge.
Tom James - a British PR officer, Yasmin Sheikhodoa - a Danish citizen and Zamzam Hussein - a Kenyan were released after hours of grilling following their Tuesday arrest at Rosslyn Estate in Gigiri.
They were however ordered to surrender their laptops and phones for further investigations.
The three were arrested by the Flying Squad, Special Crime Prevention Unit and NIS officers on suspicion that they were recruiting al Shabaab members.
It is alleged that they were nabbed with al Qaeda training literature and books.