Italian PhD student Giulio Regeni’s research in Egypt was the reason for his murder, Italy’s chief prosecutor Giuseppe Pignatone said on Thursday, Reuters reports. Pignatone said that Regeni “had for months attracted the attention of Egypt’s state apparatus, which continued in an increasingly pressing way” until he went missing. The prosecutor’s statement comes a few weeks after Italian investigators seized the computer and cell phone of Regeni’s Cambridge University professor, Maha Abdelrahman.