New Delhi: With the BJP (Bharatiya Janata Party) firing salvos at the UPA (United Progressive Alliance) Government over Kanchi Seer's incarceration and re-induction of JMM (Jharkhand Mukti Morcha) chief Sibu Soren into the Union Cabinet, the winter session of Parliament, beginning December 1, is likely to be a stormy affair even as a heavy legislative agenda awaits it.

The main Opposition slammed the Government soon after Soren was re-inducted into the cabinet saying it would raise the issue in Parliament as the "moral fabric of the Government is a complete suspect".

Though political parties had assured Lok Sabha Speaker Somnath Chatterjee at a meeting on November 23 that they would ensure smooth functioning of the House, the BJP said it would raise issues "aggressively, offensively and assertively".

BJP sources said the party was unlikely to disturb the proceedings but Soren's return and Seer Jayendra Saraswathi's arrest are issues on which the Opposition would like to put the Government on the mat.

The NDA (National Democratic Alliance) had vociferously raised the issue of "tainted" ministers in the budget session after an arrest warrant was issued against Soren in a 20-year-old murder case.

The proceedings were disrupted for most part of the session and both the Houses adjourned prematurely.

With about 20 important bills, including the Patents (Amendment) Bill, to be introduced, a heavy legislative agenda awaits the winter session that will have 17 sittings.

Eleven bills will replace ordinances promulgated during the inter-session period.

Finance Minister P Chidambaram had said efforts were on to ensure that maximum bills were passed in the session.

With the Opposition seeking more time for completion of business, Parliamentary Affairs Minister Ghulam Nabi Azad said if needed the session could be extended.