A leading Irish horse racing syndicator has been suspended from all activity, including running horses, Horse Racing Ireland has said.
HRI has said it is engaging with the Supreme Racing Club to resolve "a number of queries and concerns".
However, in a statement HRI have said that due to an unsatisfactory response from Supreme Racing Club they have suspended the syndicator's ownership accounts from all activity.
The decision was made under Horse Racing Ireland Directive 15, which relates to racehorse ownership.
HRI has said that Supreme Racing was aware "at all times" that the penalty for the non-delivery of information requested by the agency would be a hold put on all entries and declarations for horses registered to it.
A number of leading National Hunt horses run in the colours of Supreme Racing Club, including Punchestown Gold Cup winner Kemboy.
The club has in the region of 30 horses in training with perennial champion trainer Willie Mullins, including well-known runners such as Airlie Beach, Aramon and Cadmium.
Kemboy, the club's star turn, was due to make his seasonal reappearance in the Grade 1 Ladbrokes Champion Steeplechase at Down Royal on Saturday 2 November.
According to the club's website, there is a maximum of 20 owners per syndicate, with share ranging from 2.5% to 10% available.