Norwich’s Cameron Jerome has alleged he was racially abused during the 1-1 draw with Leeds at Carrow Road.
Chris Martin's 81st-minute penalty sent Derby to the top of the league after the Rams grabbed a 1-0 win over Blackpool.
Souleymane Doukara earned Leeds a 1-1 draw at Norwich - but Darko Milanic remains without a win since taking charge.
Watford were knocked off top spot in the Sky Bet Championship as Nottingham Forest came from behind to earn a 2-2 draw.
Wolves powered into the Sky Bet Championship play-off spots with a comfortable 2-0 win over Middlesbrough at Molineux.