Nepal casino operator Silver Heritage Group has bid an abrupt goodbye to its chairman David Green.

On Monday, the Australian-listed Silver Heritage informed investors that its chairman and non-executive director David Green (pictured) had tendered his resignation as director “with immediate effect.” The brief announcement stated only that Green had quit “for personal reasons and also to enable him to focus upon other business interests.”

The company thanked Green for his “considerable effort and input during his tenure as director.” Matthew Hunter, an independent director since 2014, has been installed as interim chairman.

The company offered no guidance on what process might be forthcoming to find a permanent replacement, strongly suggesting that Green’s exit was something of a surprise.