West Brom have confirmed Jake Livermore was the target of abuse about the death of his new-born son from a West Ham supporter.
Livermore became embroiled in an altercation and stepped into the crowd near the tunnel area at the London Stadium during West Ham's 2-1 win on Tuesday.
The midfielder and his partner Danielle lost their son Jake Junior shortly after he was born in May 2014. An inquest the following April found the baby's death had been avoidable, causing Livermore, then at Hull City, to 'self-destruct'.
In May 2015 he tested positive for cocaine and did not play for four months but was spared a ban because of the circumstances which had followed the death of his son.