According to Alpine F1, Fernando Alonso suffered a fracture to his upper jaw requiring surgery. Fernando will remain at hospital for 48 hours and according to the team, he will be able to resume training soon.
Alpine F1 Press Release:
Following his cycling accident yesterday Fernando Alonso was kept under observation in hospital in Switzerland. Medics discovered a fracture in his upper jaw and conducted a successful corrective operation. The attending medical team are satisfied with his progress.
Fernando will remain under observation in hospital for a further 48 hours.
Looking forward, after a few days of complete rest, he will be able to progressively resume training. We expect him be fully operational to undertake preparation for the season.
Alpine F1 Team and Fernando thank you for your wishes and will issue further updates when appropriate.