West Bromwich Albion have contacted police over an alleged racist message sent to midfielder Romaine Sawyers.
They have called for "the toughest available legal punishment" and will ban the individual responsible from The Hawthorns for life.
"There is No Room For Racism. Anywhere. Challenge it, report it, change it," said the Premier League club.
"Albion will offer Romaine the relevant support required at this time and continues with its long-standing commitment to help rid football of racism."
Saint Kitts and Nevis international Sawyers, 29, played for West Brom between 2009 and 2013 and rejoined the club from Brentford in 2019.