The imposition of President's rule in Bihar has been challenged in the Patna high court.

• President's rule in Bihar

Communist Workers Platform Convenor Chandrika Prasad, in his public interest litigation petition, urged the court to issue a direction to invite the single-largest party or the largest pre-poll or post-poll alliance to form a government in the state.

• Buta Singh to effect major reshuffle

The President's rule was imposed in Bihar on Monday night following a recommendation by Governor Buta Singh.