Samajwadi Party chief Mulayam Singh Yadav and general secretary Amar Singh Wednesday went to an undisclosed place for a briefing by National Security Adviser MK Narayanan on the Indo-US nuclear deal.
Yadav and Singh went from the latter's residence for the briefing even as the journalists were prevented by police from chasing them.
Narayanan was to brief them on the salient features of the nuclear deal in an effort to convince them that the agreement is in the interest of the country.
The government decided to brief the SP leaders after they claimed that they did not know any "new" detail of the nuclear deal and hence could not decide whether or not to support the UPA on it.
SP has 39 members in Lok Sabha and they would be crucial for the government's survival if the Left parties carry out their threat to withdraw support over the deal.