pushbacks of migrants in Greece
... that Frontex's role in pushbacks of migrants in Greece has led to investigations by the European Parliament, EU Ombudsman, and EU anti-fraud agency?
... that <a href="./Frontex" id="mwCG0" rel="mw:WikiLink" title="Frontex">Frontex</a>'s role in <b id="mwCG4"><a class="mw-redirect" href="./Pushbacks_in_Greece" id="mwCG8" rel="mw:WikiLink" title="Pushbacks in Greece">pushbacks of migrants in Greece</a></b> has led to investigations by the European Parliament, EU Ombudsman, and EU anti-fraud agency?