JoyNews sources confirmed Mr Adiyiah died on Friday in his home. He was found dead on his chair.
The former MP, also the CEO of Golden Bean Hotel in Kumasi, died at age 67.
Richard Akuoko Adiyia was a consummate Finance and International Development Executive.
He worked with the United Nations for over a decade across continents. Mr Adiyia worked as Chief Finance Officer (CFO) at United Nations Observers Mission in Georgia (UNOMIG).
He was in charge of Budget and Finance at the United Nations Office of the High Commissioner for Human Rights (OHCHR), Geneva, Switzerland and the Finance Officer, United Nations Office for the Coordination of Humanitarian Affairs (OCHA), New York, USA.
Before becoming the CEO of PBC, Mr Adiyah became the Financial Controller of GIHOC Distilleries Company Limited.