Oil company Aminex has announced that, due to health reasons, Jay Bhattacherjee will step down as chief executive and director of the company with immediate effect.

The board of Aminex has appointed Tom Mackay as interim chief executive officer, with immediate effect. Tom joined Aminex in September 2014 as a non-executive director and is currently the Senior non-executive director on the board.

The board in due course will commence the process for the recruitment of a new chief executive officer. Linda Beal takes over as the senior non-executive director.

John Bell, chairman of Aminex, said: 'We are all very sorry that Jay has had to step down at short notice due to a medical condition which requires immediate attention.

'Since he joined the company in 2013, he has overseen a number of projects, most notably the progress on the Ntorya Field, and has been a well-respected colleague. We wish Jay all the very best as he focusses his efforts on his health in the coming months.'