By FOX Sports staff
In a statement on the club's official website, it was confirmed that Cooper's tenure had ended on September 1, just hours before the Thunder Castle recorded a 2-1 win at Osotspa Saraburi to reclaim top spot in the Thai Premier League.
Cooper had only been handed the reins at the start of May following the abrupt depature of Attaphol Puspakom, who parted ways with the club on the same evening he led them to the AFC Champions League Round of 16 and later joined Bangkok Glass.
The Englishman had done remarkably well since taking over the job and leaves with Buriram still challenging for silverware in the Premier League, FA Cup and League Cup, as well as looking to progress to the Champions League semi-finals, although they have a 1-0 deficit to overturn in their last-eight tie with Iranian giants Esteghlal later this month.
The club also confirmed that the coaching change does affect their goal of emerging as champions of all three domestic competitions, along with reaching the last four of Asia's premier club competition.
It is understood that Oriol Gil has been handed the reins on an interim basis as Buriram have not had time to evaluating candidates to be Cooper's full-time successor.
Image courtesy of Buriram United FC