Salis had been held in Hungary for more than a year on charges relating to an alleged assault on neo-Nazis at a far-right event in Budapest. She was charged with attempted assault and accused of being part of an extreme left-wing organization. The Hungarian prosecutor had asked for a prison term of 11 years. In May, she was granted house arrest in Budapest.
The Salis case caused a diplomatic incident when she appeared handcuffed and shackled in a Hungarian courtroom where she faced trial.
In April, the Greens and Left Alliance announced that they would add her to their list for the European election so that Salis could benefit from parliamentary immunity and be freed. More than 170,000 voters in Italy voted for Salis in a bid to bring her home from Hungary.
