'We are searching the residences of Koda and the three ex-ministers to find documents relating to their assets,' an official of the vigilance department told IANS.

While his house was being searched, Tirkey told reporters: 'We want the cases lodged against us to be investigated fast. If we are found guilty then we should be punished. The cases should not linger on for a long period of time.'

Meanwhile, two former Ministers, Enos Ekka and Harinarayn Rai are absconding despite arrest warrants being issued against them last month.