Albion defender Gaetan Bong has accused West Brom striker Jay Rodriguez of using "unforgivable" words.

The FA have launched an investigation into an alleged remark made by Rodriguez to Bong during yesterday's Premier League fixture at the Hawthorns.

Bong said in a tweet: "Some words should not be said on a football field and specially not by players Rodriguez words are unforgivable for the man I am!!"

According to the Sunday Times Bong is alleging that he was racially abused by Rodriguez with the words "you're black and you stink".

Rodriguez has denied the accusation.