England and Sunderland player Adam Johnson has been arrested on suspicion of having sex with a girl under 16, according to Sky sources.
The Premier League club announced he had been suspended pending the outcome of a police investigation.
The 27-year-old winger was detained at his home earlier in the day and Durham Constabulary said he remains in police custody.
He is helping officers with their inquiries, the force added.
Born in Sunderland, Johnson cost the club £10m when he joined in 2012 and he has scored 17 goals for them.
He has represented his country 12 times and has also played for Middlesbrough and Manchester City.
In a statement, Durham police said: “A 27-year-old man was arrested earlier today on suspicion of sexual activity with a girl under 16.
“He remains in police custody and is helping officers with their inquiries.”