Glentoran are tonight beginning the search for a new manager after boss Eddie Patterson was sacked after a 2-0 home win over Carrick today.
A club statement issued within an hour of the final whistle pointed to the club's 'deteriorating' league position and the need to be competing for places in European football competition.
The Glens are currently in the bottom half of the Danske Bank Premiership in seventh place.
Former Cliftonville boss Patterson's biggest achievements at Glentoran were two Irish Cup wins in his four years. He had been operating under severe financial constraints and, while recognising that, board and supporter patience had been running out in recent weeks.
Former manager and club director of football Roy Coyle will take over until a new boss is appointed.
Patterson's exit follows the departure of Warren Feeney from Linfield and appointment of Northern Ireland legend David Healy. Managerial change in quick succession at Belfast's Big Two is a rare event in Northern Ireland football.
The full text of the Glentoran statement, issued by media director Ian Clarke, reads:
'Glentoran FC wishes to announce that team manager Eddie Patterson was this evening relieved of his responsibilities.
The club wishes to thank Eddie for his commitment and contribution to Glentoran over the past 4 years. He assumed the position at a period of serious challenge and transition for the club and the 2 Irish Cup victories achieved during his tenure will ensure that Eddie has claimed a positive place in the long history of Glentoran.
However the Board of Directors are concerned at League performances this season so far and deterioration in our league position in each of the past 3 seasons. Glentoran is a club where supporters reasonably expect year on year progress in league position and to be challenging for Europe through the league. Unfortunately this has not happened.
The club will now seek to appoint a new manager who will build for both this season and the future through focus on the progression of our Development Squad and our exceptional Academy as well as the first team. We will also expect the next Manager to develop a coherent succession plan that will see Glentoran succeed through the next few pivotal years and beyond.
Director of Football Roy Coyle will assume control of all team affairs until a permanent appointment is made.
We are sure all Glentoran supporters will thank Eddie for his efforts and wish him the very best for the rest of his career both in and out of football.'