The collision on the edge of Cairo killed at least seven people and injured more than 110.
The passenger train was travelling from Egypt's capital to Aswan in the south when it derailed, overturning carriages.
President orders prompt investigation after one train derails in collision in al-Ayyat about 30 miles from Cairo
It is yet unclear what caused the accident but Egyptian President Abdel Fattah al-Sisi said an investigation is underway and will "hold accountable anyone who proves their negligence".
A collision outside Giza caused carriages to derail, with a massive emergency operation under way.
Warnings of escalating clampdown on press freedom come after Cairo court convicts Attalah of managing an unlicensed website