Four senior West Brom players were involved in “an incident” during the club’s mid-winter training trip to Spain, the club said.
A report in The Sun on Friday said the four players allegedly absconded with a taxi to return to their hotel in Barcelona, then left the car at a nearby McDonald’s. The players were questioned by police but no one was arrested, according to the tabloid.
The Baggies announced on Friday that they have opened an investigation into the matter but did not confirm any further details.
The club say the quartet will be “subject to the full rigours of our internal disciplinary procedures,” and that they will make no further comment until their investigation is completed.
West Brom were in Barcelona on a three-day trip while preparing for Saturday’s FA Cup fifth-round game against Southampton.
Information from Press Association was used in this report.