Cairo - Egyptian security forces have detained 10 suspects in connection with the bomb attack in Cairo on Sunday that killed a French tourist, a security source told Deutsche Presse-Agentur dpa on Wednesday.

The source, who spoke on condition of anonymity because he was not authorized to speak to the media, did not elaborate.

Twenty-four people, including a young Egyptian child, were injured in the blast in Cairo's Medieval quarter.

On Monday, sources told dpa that five people had been arrested and three later released. Police have not released information on subsequent arrests.

The Parisian newspaper Le Canard Enchaine on Wednesday reported that French intelligence officials believe that the bombers may have deliberately targeted French tourists.

Seventeen of the wounded were from a French school group visiting Cairo from the Parisian suburb of Levallois-Perret.

Messages posted to Islamist websites following the bombing claimed the bombers had targeted French holidaymakers because of a French frigate's cooperation with the Israeli Navy in preventing weapons smuggling into the Gaza Strip, French intelligence officials told Le Canard Enchaine.

Soon after the attack, the French Foreign Ministry said it did not believe French nationals had been deliberately targeted. (dpa)