Cronulla Sharks' Andrew Fifita was placed into a medically induced coma after sustaining a serious throat injury on Sunday, with his brother David thanking the NRL for their support.

Fifita was taken off 39 minutes into Sunday's game against Newcastle Knights in Brisbane and the Sharks later confirmed he suffered a fractured larynx

Approximately 20 minutes after full time, the 32-year-old was brought out of the changing rooms and onto the field, where he was examined by paramedics and transferred to hospital in an ambulance.

A statement from the Sharks read: "In updating the condition of Andrew Fifita, after conferring with specialists today at the Royal Brisbane and Women's Hospital, the Sharks can inform that Andrew has suffered a laryngeal fracture and is currently in an induced coma.

"Andrew is in a stable condition, with a surgical correction scheduled to take place tomorrow (Tuesday) afternoon.

"He is receiving the best possible care and all going well, it is expected he will recover in hospital for an extended period.

On Monday, Andrew's twin brother David – who plays for Super League side Wakefield Trinity – thanked fans for their support and concern but asked for privacy for his family.

"On behalf of the Fifita family, I would like to thank everyone for their support, concern and kind words during this difficult time that we face," he wrote on Twitter.

"As a family we ask everyone to please respect our privacy and allow Andrew and the family space to heal and recover.

"In saying this I would like to thank Cronulla Sharks and the NRL for helping support our family in Queensland through this time."