New Delhi, July 23 - There would be no compromise on the security of political leaders, the government asserted Thursday as reports of protection cover being downgraded created an uproar in parliament with the opposition disrupting both the Lok Sabha and the Rajya Sabha.

'On the security of the leaders, there will be no compromise,' Finance Minister Pranab Mukherjee, who is also the leader of the house, said in the Lok Sabha.

Parliamentary Affairs Minister Pawan Kumar Bansal also assured members that there would be 'no reduction in the security' of Bahujan Samaj Party (BSP) leader and Uttar Pradesh Chief Minister Mayawati, Samajwadi Party's Mulayam Singh Yadav, Rashtriya Janata Dal's Lalu Prasad and Bharatiya Janata Party's Murli Manohar Joshi.

A similar assurance was also made in the upper house, Rajya Sabha, which was adjourned soon after it began the day's proceedings.

In Lok Sabha, too, angry BSP members took up the issue as soon as the house met at 11 a.m. and rushed towards Speaker Meira Kumar's podium shouting slogans against the government after reports that the Z-plus security cover being given to Mayawati may be downgraded.

The speaker's repeated requests to them to raise the matter during zero hour would not pacify the members, forcing her to adjourn the house for half-an-hour.

Chaos ruled even after the house re-assembled.

'The government is planning to scale down the security provided to Mayawati and Home Minister P. Chidambaram should reply soon,' BSP leader Dara Singh Chauhan said.

In a move to calm the situation, Mukherjee said: 'I checked up the position on the issue with the home minister and he has assured me that he has not received the report of review committee so far.