New Delhi: Prime Minister Manmohan Singh will make a statement in Parliament on Tuesday in which he is expected to announce the government's intention to form a Joint Parliamentary Committee to probe the 2G spectrum allocation scam.

He is likely to make the statement in the Lok Sabha soon after the introduction of new ministers in his Cabinet.

Parliament sources said a motion for constituting a JPC would be moved on Thursday by Telecom Minister Kapil Sibal after the Prime Minister replies to the Motion of Thanks to the President's address to the joint sitting of Parliament.

The government has already agreed to the opposition demand for formation of a JPC into 2G spectrum allocation, an issue over which the entire winter session of Parliament was washed out.

Government sources indicated that the JPC will be "broad- based" and would accommodate as many parties as possible.
If the size of the JPC is kept small, there could be representation for only seven to nine major parties. Congress, BJP, Trinamool Congress, Samajwadi Party, BSP, JD-U and DMK could get the membership in view of their numbers. There are a total of 37 parties in Parliament.

Sources said if the JPC has 30 MPs, then it would comprise 20 members from the Lok Sabha and 10 from the Rajya Sabha. If the Committee is set up with 21 members, then 14 will be drawn from the Lower House and 7 from the House of Elders.