Brussels said that, “under the scope of monitoring the enforcement of the decisions regarding state aid, the Commission has conducted a preliminary assessment of how Portugal applied the aid regime to the MFZ until it expired at the end of 2014” and, “currently, there are doubts as to whether the Portuguese authorities respected some of the underlying conditions under which the regime was approved by the decisions of 2007 and 2013”, which is why it has begun an in-depth investigation.