Lucknow: Raids were conducted by police overnight to trace expelled BJP leader Dayashankar Singh even as his family threatened to file an FIR against Mayawati and senior BSP leaders for allegedly using foul language.

Superintendent of Police Manoj Kumar Jha said that raids were conducted last night but there was no clue about Singh's whereabouts. There were unconfirmed reports that Singh could surrender in the court in Lucknow.