The British Horseracing Authority has decided to hold an inquiry into the circumstances surrounding a shoulder injury sustained by Timmy Murphy at Newbury on Friday.
Murphy was taken to hospital for X-rays on his shoulder midway through the card, although the reason for the injury was unclear at the time as he was seen walking away from the weighing room in some apparent pain before being helped into an ambulance.
Murphy had guided Upsilon Bleu to finish fourth in the bet365 Open Handicap Chase, but returned seemingly none the worse.
Reports suggest the jockey suffered the injury during the course of an altercation with a fellow rider in the weighing room but Murphy's wife, Verity, pointed to a recurring shoulder problem as the cause on Friday night.
She said: "He was feeling it when he came back in after the 2.40. He's hurt his shoulder, but is feeling much better now."
While the Newbury stewards received no report of an incident on the day, BHA officials have now confirmed they will look into the alleged incident, with the possibility of an inquiry after racing today if Murphy is on hand.
Spokesman Robin Mounsey said: "Further information has come to light during the course of last night and this morning and we are going to hold an inquiry into the incident.
"If Timmy Murphy is available we will hold it after racing today, but that obviously depends on his schedule and if he is not here, we will schedule it for a later date."
Murphy's mishap means he misses the ride on leading fancy Our Father in the Hennessy Gold Cup at Newbury and his agent Chris Broad is unsure how long he will be on the sidelines at this stage.
"I have no idea when he will be back at the moment," said Broad.
"I spoke to him this morning to confirm whether he will be riding today and he will not.
"I'll speak to him again tomorrow to see where we are."