Nairobi Senator Mike Mbuvi has said the Huruma tragedy where seven people died should be blamed on corruption at the Nairobi County City inspectorate unit.
Sonko said the house which collapsed in the Nairobi estate must have been approved by the inspectors of physical structures whom he accused of taking bribes to allow sub-standard construction works to be erected.
He blamed the county government of Nairobi over what he termed as laxity in ensuring safety standards are never compromised while building residential houses.
Sonko said the County was at the position to avert the situation had the inspectorate personnel condemned the building before it would be late.
"This is just another serious tragedy to occur in Nairobi because of failure by the city inspectorate engineers to demolish sub-standard buildings which are risky to people and we want the Governor to take responsibility over the laxity of the department which should assure people of their safety," said Sonko.
The senator who has also expressed interest of vying for the Nairobi gubernatorial seat in 2017 elections said the county government had been advised to mark all dangerously erected houses in the city estates.
"All the houses which were to be demolished were questionably spared and the inspection exercise never continued because people were bribed and left their mandate to the dogs," accused Sonko.
Sonko, who accompanied Water and Irrigation Cabinet Secretary Eugene Wamalwa to Gamba, in Kitutu Chache North Constituency was addressing residents and the faithful of Kioge Church in the constituency where they helped raise funds for the church's development.
Japhet Mokaya, an aspirant for the parliamentary seat hosted the two, together with other local dignitaries.
Water Cabinet Secretary Eugene Wamalwa, who also addressed the gathering led the crowd of faithfuls to observe a moment of silence in recognition of the Kenyans who lost their lives in the house which collapsed following a heavy downpour in Nairobi.