A joint team of the CBI and the Employees` Provident Fund Organisation vigilance cell conducted searches at two EPFO offices in Maharashtra`s Nagpur city following some complaints of irregularities against EPFO employees, officials said on Wednesday. The Central Bureau of Investigation`s (CBI) anti-corruption branch in Nagpur and the EPFO`s vigilance team from Mumbai started the searches on Tuesday morning in the EPFO offices located at Tukdoji square and Umred road here and continued till late night, they said.

"Several incriminating documents were seized during the searches," an official said. A large number of files and PF entries were checked, according to sources. It is mandatory under the Employees` Provident Fund and Miscellaneous Provisions Act for firms having 20 or more workers to subscribe to social security schemes run by the retirement fund body EPFO.