Train services have resumed in Sharqiya after a bomb exploded on the track on Wednesday morning, Al-Ahram Arabic news website reported.
An improvised explosive device had been placed on the track between Zagazig and Mansoura.
Metwally El-Sayed, an official at the Zagazig railway authority, said services had been halted for a couple of hours but were now restored with slight delays.
Egypt has been hit by a wave of bomb attacks by anti-government militants since the ouster of Islamist president Mohamed Morsi in July 2013.
A bomb-laden car injured 10 in North Sinai on Wednesday morning.