Lucknow, Apr 22: Senior Congress leader Digvijay Singh has been booked for threatening Uttar Pradesh Chief Minister Mayawati by misusing CBI against her.

The case has been booked for violating the model code of conduct against Singh late on Tuesday night on the directions of the district administration, said Hardoi sources.

Earlier, Singh refuted reports that he had threatened to target Mayawati with the help of CBI.

Singh at a rally in Hardoi said that the Central Government would use the CBI against Mayawati if she continued to harass Congress workers.(ANI)