Newcastle United have confirmed midfielder Sandro Tonali is being investigated by the Italian Prosecutor's Office and the Italian football federation in relation to alleged illegal betting activity.
The 23-year-old was recently withdrawn from Italy's training camp.
Newcastle say Tonali is co-operating with the enquiry.
"He and his family will continue to receive the club's full support," the club added in a statement.
"Due to this ongoing process, Sandro and Newcastle United are unable to offer further comment at this time."
Tonali and Aston Villa's Nicolo Zaniolo recently left Italy's training camp for Euro 2024 qualifiers against Malta and England after being told they were involved in an investigation by Italian prosecutors.