A Cairo prosecution ordered on Saturday the detention of two people for four days pending investigations into the murder of engineering student Mohamed Abdel-Aziz, who was found stabbed to death in Heliopolis earlier this week.

Abdel-Aziz’s mother said that her son had arranged a meeting with someone through the online shopping website OLX to buy a laptop.

The18-year-old defendants have confessed to the crime, saying they planned to rob Abdel-Aziz after arranging the meeting through the website.

The defendants said that they stabbed Abdel-Aziz when he resisted their attempt to rob him, taking his mobile phone and EGP 25,000, according to the prosecution, who added that the suspects were later arrested at their homes.