Gardaí have visited Ballymaloe cookery school in Co. Cork after receiving a complaint regarding possible breaches of Covid-19 restrictions.
Gardaí visited the premises in Shanagarry yesterday.
In a statement, they said the owners have agreed to cease any operations while they complete their enquiries.
Meanwhile, the Ballymaloe cookery school said it believed it had "an obligation" to a small number of international students who had travelled to Ireland before the latest lockdown to take part in a cookery course at the school.
In a statement issued to RTÉ's Morning Ireland, the school said: "The Ballymaloe 12 week Certificate Course would usually host over 60 students on a residential basis.
"In line with Government Guidance, we took the decision to cancel the January course, but given the tight timing of the announcement, a small number of international students had already arrived in Ireland to quarantine prior to the Level 5 Lockdown."
"We felt we had an obligation to these young people, who had travelled alone to Ireland and were understandably reluctant to travel internationally again to get home."