Since the adoption of the first report on Italy in July 2014, as part of its mandate to monitor the implementation of the Convention, GRETA has continued to follow developments related to trafficking in human beings in Italy. At its 25th plenary meeting (7-11 March 2016), GRETA was made aware of reports according to which possible victims of trafficking in human beings were being returned from Italy to Nigeria on forced return flights. For example, according to different sources, on 17 September 2015, during a join return operation by air from Rome to Lagos (Nigeria), organised and co-ordinated by the European Agency for the Management of Operational Co-operation at the External Border of Member States of the European Union (Frontex), about 20 Nigerian women detained at the CIE Ponte Galeria, Rome, some of whom were described as victims of trafficking, were forcibly returned to Nigeria.  The present report was considered by GRETA at its 27th meeting (28 November – 2 December 2016), following which it was sent to the Italian authorities for comments on 19 December 2016. The Italian authorities’ comments, received on 13 January 2017, are reproduced at the end of this report.