JUDGMENT

ALTAMAS KABIR, J.

1. Of the four Special Leave Petitions heard together by us, two have already been disposed of and the remaining two, namely, SLP (c) Nos.336/06 and 655/06, are being disposed of by this common judgment.

2. Leave granted in both the special leave petitions.

3. Public Concern for Governance is a registered Trust which filed a Public Interest Litigation, being No.43/2005, in the High Court of Judicature at Mumbai, questioning the manner in which certain residential plots in the Navi Mumbai Municipal Area had been allotted by the City and Industrial Development Corporation (hereinafter referred to as CIDCO). CIDCO is an authority constituted by the State of Maharashtra under the Maharashtra Regional and Town Planning Act, 1966 (hereinafter referred to as the MRTP Act) for development of Navi Mumbai and other townships.

4. The allotments made have been challenged on various grounds. The main ground of challenge is that the allotment and disposal of plot Nos. 24 to 29 (Nerul) was in violation of the existing regulations regulating such allotment. According to the writ petitioners, the Regulations provided for the allotment of plots effected either by public adverti