When contacted, minister Wijedasa Rajapakshe confirmed it.
Ministers who are abroad, including Dayasiri Jayasekara and Arjuna Ranatunga, have been instructed to return immediately.
Reliable sources say there will be a full reshuffle of the cabinet, with changes to the ministries of Ravi Karunanayake, Arjuna Ranatunga, Mangala Samaraweera, Gayantha Karunatilake, Chandima Weerakkody and Vijith Wijayamuni Soyza.
Several UNP backbenchers, including Nalin Bandara, Buddhika Pathirana, Mujibur Rahman and S.M. Marikkara are likely to be appointed deputy ministers.