Tsikata was appointed the Chief Executive of the Ghana National Petroleum Corporation (GNPC) from October 1988 to December 2000 by the then ruling NDC led by
Jerry Rawlings.
Trial, jail and pardon Tsikata was tried for causing financial loss of GH¢230,000 to the state whilst CEO of Ghana National Petroleum Company after a trial through the Accra Fast Track Tribunal, one of many set up by the
Kufuor government to try such cases. The trial started in 2002 and lasted for six years. He was pronounced guilty on 18 June 2008 by Mrs. Justice Hernrietta Abban. The length of the trial is reputed to be the longest ever involving a former government official in the history of the country. Those loyal to President Kufuor's
New Patriotic Party government hailed this as a triumph for the judicial system while Tsikata's sympathizers and
National Democratic Congress supporters saw the trial as politically motivated. This led to the formation of the "Free Tsatsu Movement". He was granted an unconditional pardon by the then President
John Kufuor on his last day of office after his party, the
New Patriotic Party lost the
Ghanaian presidential election, 2008. At the time, he was on admission at the
Korle Bu Teaching Hospital under prison guard following a severe bout of asthma. Tsatsu Tsikata rejected the presidential pardon and announced at a forum later that he felt the pardon was not in good faith and that he would fight through the court system to clear his name.
Bail, appeal and exoneration After rejecting the presidential pardon, by 13 January 2009, Tsikata was granted bail by Justice Edward Amoako Asante at an Accra Fast-Track high court pending appeal meaning he was no longer required to be in jail although he was still admitted at the hospital due to his asthmatic attack. After 8 years of being charged with causing financial loss to the state, on 30 November 2016, he was declared innocent by an Appeals Court presided over by Justice Dennis Adjei and his 5-year jail term was quashed. ==Personal and social life==