Sunderland have suspended defender Titus Bramble after he was arrested on suspicion of sexual assault and possession of a Class A drug.
The 30-year-old former Newcastle and Wigan man was questioned before being released on bail on Wednesday.
A club statement said: "Titus Bramble has been suspended from duties, pending the outcome of a club investigation.
"The player will not attend team training or be available for selection for matches during this period."
The statement concluded: "The club is unable to make any further comment on the matter at present."
Titus Bramble's career started at his hometown club, Ipswich, before he moved to Newcastle United for £6m.
He then joined Wigan Athletic and then moved back to the North East with Sunderland last year.
The Sunderland centre-back, who was picked 10 times for England's Under-21s, played in his club's 2-1 defeat at Norwich on Monday.