West Ham have confirmed the Football Association are investigating a comment made by Ravel Morrison on Twitter.
The 19-year-old midfielder, who moved to Upton Park from Manchester United on transfer deadline day last week, is reported to have made a homophobic comment in response to another Twitter user.
A statement on West Ham's website read: "West Ham United are aware that the FA have written to Ravel Morrison asking for his observations regarding comments on Twitter.
"Ravel and the club will co-operate fully with the FA's request and have until Monday evening to respond. There will be no further comment from West Ham United or Ravel at this stage."
It is an inauspicious start to Morrison's West Ham career after he was also involved in various off-field controversies while at Old Trafford.
Manchester United allowed the youngster to leave despite him being rated as one of the finest prospects to come out of the club in recent years.
