April 21 (Reuters) - Delek Group Ltd DLEKG.TA
* Delek Group Ltd's offer to acquire Ithaca Energy Inc; Common shares extended for mandatory extension period to May 3, 2017
* Delek Group Ltd - offer is being extended for mandatory extension period until 5:00 p.m. on May 3, 2017 Source text for Eikon: Further company coverage: DLEKG.TA