The six were taken to Kilimani police station after the police nabbed them for allegedly extorting Kshs.30 Million from two governors.
The five reportedly presented files for investigations into the accounts of the two governors as leverage for the extortion.
Police set traps for Akala and the others, one of whom was of Asian origin.
Akala headed the NASA's People's Assembly Secretariat and is ODM's Deputy Director of Campaigns.
The People's assembly was formed after the repeat elections where NASA rejected the results of the polls.
"We wish to make it very clear that Kenyans cannot and shall not accept the blatant usurpation of power by the Jubilee administration and its determined effort to revert this nation to an authoritarian rule and the attendant abuse of our human rights," ODM stated at the time.
Addressing a press conference alongside other members of the People's Assembly Steering Committee, Ndii explained that they had decided to suspend the process to allow for talks between President Uhuru Kenyatta and opposition leader Raila Odinga.