The attacks began after security forces cleared two Islamist protest camps
The Masrawy website cited the military-backed interim government spokesman Sherief Shawki as making the announcement.
The statement followed reports by some media outlets that the government intended to extend the state of emergency after the attack on a Coptic church in the Cairo suburb of Al Warraq Sunday that killed at least three people.
Egypt has in the past two months seen its worst spate of attacks on churches and minority Christian properties in years.
The attacks began after security forces Aug 14 cleared two Islamist protest camps in Cairo set up to demand the reinstatement of elected Islamist president Mohammed Morsi, and killed hundreds of his supporters.