Liverpool have confirmed Naby Keita spent last night in hospital after breaking down in their Champions League defeat to Napoli.

The Reds confirmed in a statement:

"Liverpool Football Club can confirm Naby Keita was taken to hospital in Naples on Wednesday evening during the first half of the Champions League fixture with SSC Napoli.

"The midfielder started the game at the Stadio San Paolo, but was substituted inside the opening 20 minutes and replaced by Jordan Henderson after alerting the team's medical staff to back pain.

"Keita was transferred to a local hospital with the club doctor, where - with the midfielder's agreement - he underwent a number of precautionary health checks to assess his condition.

"No decision has yet been taken on when the 23-year-old will be discharged."