THE Singapore Exchange's regulatory arm (SGX RegCo) on Friday notified Catalist-listed Magnus Energy Group to put on hold all corporate transactions until its board is fully reconstituted, and said it would investigate a recent disposal by the firm for possible breaches of the Catalist rules. Magnus Energy is set to convene an extraordinary general meeting (EGM) on Jan 9 as two teams seek shareholders' support to be appointed directors of the troubled oil and gas company. In a Dec 31 update, the company had said that "all planned actions are expected to be taken only after the EGM". But it was brought to the attention of SGX RegCo that the company had sold its 50 per cent indirect interest in Mid-continent Environmental Protection (MEPWM) to the latter's existing director, Chong Yen Yee, for RM1 (33 Singapore cents).