New Delhi, Aug 13 - The Communist Party of India-Marxist and the Forward Bloc Thursday alleged that the Trinamool Congress ministers at the centre were instigating violence across West Bengal to facilitate imposition of president's rule in the state there.

The Trinamool Congress, on the other hand, urged the central government to send an official delegation to the state to decide on the use of Article 355, followed by the imposition of Article 356 in the state to clamp president's rule on West Bengal.

'Most of them (the Trinamool Congress ministers) are camping in the state and instigating violence across the state. Their intention is to create a situation conducive to invoking Article 356 in the state and then press for an early assembly polls,' Basudeb Acharia, Communist Party of India-Marxist (CPI-M) leader in the Lok Sabha, alleged.

Many parts of West Bengal have been under the grip of violence by Maoist rebels for over a month now.

Referring to incidents of violence in Lalgarh after the visit of Minister of State for Shipping Mukul Roy and Minister of State for Rural Development Sisir Adhikari in the area last month, Acharia said the Trinamool Congress ministers wanted to spread it to other areas of the state.

'The Trinamool leaders have been associated with the Maoists to create trouble in the state,' Acharia alleged.

Trinamool Congress leader Sudip Bandyopadhyay, however, argued that parliamentary democracy was on the verge of collapse in West Bengal and the 'central government should intervene urgently to invoke Article 355 in the state followed by the imposition of Article 356.