Former cabinet ministers Simeon Nyachae and Charles Njonjo are among the directors of 107 companies lined up questioning over corruption scandal linked to the construction of the Shs 63 Billion Arror and Kimwarer Dams.
Nyachae, who vied for presidency in 2002, has been summoned by virtue of being a director at Sansora Investments Limited, which is a shareholder at Kentainers (Kenya) Limited.
Njonjo who served as Attorney general in Mzee Kenyatta and Moi governments is a director at Heritage Insurance Company Limited which is also under probe.
All the 107 companies are linked to the project to build five multipurpose dams in the country.
The directors risk prosecution if they fail to appear before DCI for questioning.
Other prominent directors summoned include former head of Civil service Jeremiah Kereini (Heritage Insurance), Manson Nyamweya and former Kenya Airways CEO Titus Naikuni.
The firms under probe include Tusker Mattress, Sanlam General Insurance Limited, Tiles and Carpet Limited, Steel Structures and Silent Night (Kenya) Ltd.