Two bombs detonated in the city of Zagazig in Egypt's Nile Delta governorate of Sharqiya on Sunday night – one in front of a church - but left no deaths or injuries, reported Egypt's state news agency MENA.
The first explosive device, which was planted under a car, went off in front of the city's Saint Joseph Church. The second bomb went off close to Zagazig's Evangelical Church, which is located near the city's security directorate headquarters.
A sound bomb near the Zagazig's fire department was defused by police, reported MENA.
Sunday marked Easter for Egypt's Coptic Christians and authorities took extra measures to secure churches across the country.
Egypt's prime minister toured several churches in Cairo and Giza on Sunday to appraise security preparations, Al-Ahram reported.
In 2013, anti-state violence by some supporters of Islamist president Mohamed Morsi was accompanied by attacks on churches, especially in Upper Egypt.
Last week, a policeman and four civilians were injured in a shooting at a church in Egypt's second city of Alexandria.
In March, two policemen were injured when unknown assailants opened fire outside the Franciscan Sisters School in Beheira governorate.