The Italian Foreign Ministry says its embassy in Cairo has received some documents requested about the murder of graduate student Giulio Regeni, calling it "a first useful step."

Still, the ministry noted in a statement Wednesday that the documents were only "a part of the material requested." They included witness statements made to Egyptian authorities, data from Regeni's cell phone and "a partial synthesis" of the autopsy report.

The foreign ministry called for the investigation to be completed "expeditiously in the interest of ascertaining the truth."

Regeni's body was found dumped on the outskirts of Cairo with marks of torture nine days after he vanished on Jan. 25, the anniversary of the 2011 uprising, with police out in force to quash any signs of protest.