Kolkata: CPI(M) central committee, which ended its 4-day session here on Friday, came down heavily on the UPA government for its "failure" to bring an "effective" Lokpal Bill and get it adopted in the Parliament.

"Even the weak legislation was not adopted in the Rajya Sabha because the government feared that the amendments, moved by the opposition, would be carried," party General Secretary Prakash Karat told reporters.

He said that the central committee demanded that the government bring the Lokpal legislation with suitable amendments in the next session of the Parliament.

Karat said that his party was of the view that the states' rights over the appointment of Lokayukts should not be curbed.

To a question, the CPI(M) leader alleged that BJP had been "fully exposed" on the Lokpal bill.