 In late 2010, the European Parliament voted narrowly to put Kessler ahead of Thierry Cretin, an OLAF director.Later, the Council of the European Union decided that Kessler and Johan Denolf, from the anti-fraud unit of the Belgian judicial police, were their top two.Kessler took office in February 2011 and soon became engaged in a comprehensive reform process to strengthen the efficiency of OLAF, aiming to step-up the fight against fraud and corruption in Europe.