CAIRO (Reuters) - Italy hopes for a breakthrough by the end of this year in the investigation into the death of Italian student Giulio Regeni in Egypt, Italy’s deputy prime minister said during a visit to Cairo on Wednesday.

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Regeni disappeared on Jan. 25, 2016 while doing postgraduate research on Egyptian trade unions. His body was discovered on Feb. 3 and Egyptian investigators found signs of extensive torture.

“I hope that by the end of the year we can get to a breakthrough, and that the meeting between the judicial authorities can take place as soon as possible,” said Deputy Prime Minister Luigi Di Maio, who serves in a populist coalition government that took office in June earlier this year.

“Both on the Egyptian side and on our side, there is willingness to ask for an acceleration,” he said after a meeting with President Abdel Fattah al-Sisi.

Egypt’s presidency said in a statement that Sisi affirmed during the Wednesday meeting with Di Maio “his confidence in reaching the final results in the investigations into the killing of (Regeni), in light of the strong will to find the culprits and bring them to justice”.

Intelligence and security sources told Reuters in 2016 that police had arrested Regeni outside a Cairo metro station on Jan. 25 of that year and then transferred him to a compound run by Homeland Security.

Egyptian officials have denied any involvement in his death and Sisi said last month that Cairo was determined to conclude a joint investigation and bring Regeni’s killers to justice.

Di Maio said judicial officials from Italy and Egypt, which have been investigating the Regeni case jointly, were due to meet soon.

Egyptian and Italian investigators have been working together to retrieve CCTV recordings from Cairo metro stations as part of the investigation.

The two sides said in June that they had found gaps in the footage from inside and around Cairo metro stations and were trying to discover the cause.

Di Maio said he had not discussed details of the case with Sisi, but that Regeni had topped the agenda of their talks. “It’s clear that the normalization of our relations has to come about through the truth about Giulio Regeni and (his) death,” he said.

“Both President Sisi and the members of the government present were more than willing and in agreement that the truth about Giulio Regeni should be established as soon as possible.”

The Regeni case strained relations between Italy and Egypt. Italy recalled its ambassador in April 2016 before restoring its diplomatic presence in Cairo last year.

Italy is an important trade partner for Egypt, with 4.75 billion euros ($5.5 billion) in commerce per year according to Egypt’s foreign ministry. Italian oil major Eni is among Egypt’s top foreign investors.