Tyrone's preparations for next Sunday's All-Ireland SFC semi-final against Kerry has been disrupted, with members of the squad undergoing Covid-19 tests today.
Tyrone GAA have been working very closely with the Public Health Authority (PHA) and Croke Park and have confirmed that testing, and in some cases re-testing, of some members of the squad has taken place today.
A statement from the county board said that the outcome of the testing should become clear on Monday.
"Further to a number of positive Covid-19 tests with members of the Tyrone senior football panel and management, prior to last weekend's successful Ulster Championship final in Croke Park, it was decided to have all panellists and management tested for the virus," it read.
"While outcomes from these tests are awaited a number of players are self-isolating; it is anticipated that all outcomes will be known by Monday and preparations can then be made for the forthcoming All-Ireland semi-final with Kerry.
"During the past week Tyrone GAA has continued to comply, fully, with the guidelines and directives that have been issued by the Public Health Authority and by Croke Park."
A number of players and co-manager Feargal Logan missed the Ulster final win over Monaghan for Covid-related reasons.
There is no suggestion yet that the Kerry match could be rescheduled, however there is some room for negotiation in the fixtures, with a week allowed after the proposed final date of 29 August for a replay, while a deferred semi-final could also be played Saturday week, a day ahead of the All-Ireland hurling final.
The GAA moved the Under-20 hurling final scheduled for today to 17 August after the entire Cork panel were deemed close contacts.