Derby are set to issue a formal apology to Nottingham Forest after sections of their support sang distasteful songs about their rivals' former owner Nigel Doughty last night.
Jake Buxton's late goal gave Derby a dramatic 1-0 victory after relegation-threatened Forest had former Rams striker Marcus Tudgay sent off late for two bookable offences.
But the post-match talk was dominated by shocking chants about Doughty, who was found dead at his home at the age of 54 last month.
Small sections of the home fans chanted "where's your chairman gone?" and "you're going down with your chairman" to leave Cotterill sickened.
Derby boss Nigel Clough said the Rams would investigate the chants and issue an apology to Forest.