The body of an Italian student who went missing in Cairo was found half naked by the roadside with cigarette burns and other signs of torture, a senior Egyptian prosecutor said on Thursday.
In Rome, Italy's Foreign Ministry summoned the Egyptian ambassador to express concern over the death of Giulio Regeni, who disappeared on Jan. 25, the five-year anniversary of the uprising that ended Hosni Mubarak's 30-year rule.
The body of the 28-year-old Cambridge University doctoral student has been taken to a Cairo morgue, a morgue worker and security officials said.
Security officials said an investigation had begun. Regeni was found at the start of the highway from Cairo to Alexandria, they said.
A friend said Regeni had disappeared after leaving his home in a smart district in Cairo to meet another friend downtown.
Last year, members of the Islamic State in Iraq and the Levant (ISIL) kidnapped a Croatian man from the outskirts of Cairo and later beheaded him, but such incidents are rare and there was a heavy police presence in downtown Cairo when Regeni went missing.
Although the cause of death is still unclear, Regeni's case could hurt Egypt's efforts to project an image of stability and attract more tourism and foreign investment after years of political turmoil and violence.
The Italian Foreign Ministry's director general, Michele Valensise, "urgently" summoned Egyptian Ambassador Amr Mostafa Kamal Helmy after Regeni's body was found on Wednesday.
The ministry said it expected "maximum collaboration at all levels in light of the exceptional gravity of what happened".
Italian Industry Minister Federica Guidi cut short a two-day visit to Egypt on Wednesday after Regeni's death was reported.
A copy of Regeni's CV, provided by another friend, indicated he spoke four languages and had won several scholarships. His research focused on trade unions in Egypt after the 2011 uprising that ended Mubarak's 30-year rule.
Human rights groups say Egyptians are often detained by police on little evidence and beaten or coerced. Scores have disappeared since 2013. Egypt denies allegations of police brutality.
Armed groups have killed hundreds of police and soldiers since the army toppled President Mohamed Morsi of the Muslim Brotherhood in 2013 after mass protests against his rule. They have also targeted Westerners.