Police used tear gas to disperse lawmakers who were addressing the media at Kilimani Police Station where Gatundu South MP Moses Kuria was held for the better part of Friday.
Kiharu MP Ndindi Nyoro claimed that police smashed some of their vehicles.
"They have teargassed us ruthlessly and smashed some of our vehicles inside Kilimani Police Station as we tried to have them obey a court order on Hon Moses Kuria's release. Members of the press were not spared either. The fact that they keep referring to "orders from above" is telling, "he wrote.
"Most of our police officers are law-abiding, friendly and cannot be used by these fellows. Which courts will they take Hon Kuria if they can't obey orders from the same courts as on this case and Miguna Miguna's case? Dark days are here with us. We are African and Africa is our Business," he added.
Kuria was arrested on Friday morning for allegedly assaulting a woman identified as Joyce Wanja at Royal Media Services offices on December 8 last year.
Wanja had asked for help from the Directorate of Public Prosecution and Directorate of Criminal investigation.