The company said the defaulting parties were operator Bumi Parahyangan Ranhill Energia Citarum and Bumi Parahyangan Energi, which own 60% and 20% interests, respectively, in the onshore block.

Sound said the default took effect from midnight on 17 March.

If after 60 days the defaulting parties have not cured their default in all respects, they will forfeit their interests to the non-defaulting party, Sound's local subsidiary Mitra Energia.

Gerry