The UK Competition Commission (UKCC) said Monday it would deliver its interim findings on Ryanair’s almost-30% shareholding in Aer Lingus “sometime in May.” It also set a new deadline of July 11 for a final decision.

The UKCC is examining whether Ryanair’s substantial minority stake in the Irish flag-carrier has created, or may be expected to create, “a substantial lessening of competition within any market or markets in the UK.”

The investigation, which began in July 2012, had been put on hold while the European Commission (EC) launched its own investigation. Last month, the EC blocked Ryanair’s third Aer Lingus takeover attempt, a decision that Ryanair is appealing. Ryanair had also previously argued against the UKCC having any jurisdiction in the matter, an argument that was dismissed by the courts.