Troy Deeney scored the opening goal at Vicarage Road against Chelsea

The FA is investigating video footage of Troy Deeney's reaction after the Watford striker scored a penalty against Chelsea on Monday.

Deeney, who is facing the prospect of a second four-match ban this term, made an obscene gesture to the crowd after he put Watford ahead at Vicarage Road, before the Hornets eventually secured a 4-1 victory against the defending champions.

Deeney makes the gesture after converting his penalty

The FA is awaiting referee Mike Dean's report to ascertain whether he saw the incident before any decision is made. If the action was not seen by the match officials then he is subject to a standard retrospective two-game ban if a charge of making an obscene gesture is proved.

3:00 Watford 4-1 Chelsea Watford 4-1 Chelsea

Should Deeney be banned it would be his third red card of the season and therefore a further two-game ban would be implemented because of his previous disciplinary issues.

The 29-year-old served a three-match ban in October for violent conduct after grabbing the face of Stoke's Joe Allen and was also handed a four-game ban before the Christmas schedule after being dismissed for a challenge on Collin Quaner during a 4-1 defeat by Huddersfield on December 16.

Asked Troy Deeney about his celebration he said it was a reaction to speculation in the last couple of weeks and his way of saying he is still here... #watford @premierleague #WATCHE — Michelle Owen (@MichelleOwen7) February 5, 2018

Deeney said after the game it was a response to speculation over his future and to remind people he was still around. Should he be banned, he will have missed 11 games through suspension this season.

Earlier this season, Dele Alli was banned by FIFA for one match after the Tottenham midfielder made an inappropriate gesture during England's World Cup Qualifier against Slovenia in September.