Seven explosive devices were defused in the Nile Delta city of Tanta on Thursday, a source at the Security Media Centre has told Al-Ahram Arabic news website.
According to local police, an unknown figure left a black bag on the road separator twenty metres from a police station.
An explosives team found seven homemade devices connected to an electrical circuit and a timer.
Security forces have said they will increase their presence at sensitive sites around Egypt, and strive to identify who planted the devices.
Militant attacks against security targets, mostly in the Sinai Peninsula, have been on the rise since Morsi's ouster. There have been sporadic attacks in the capital and other provinces.
The military has killed and arrested a large number of alleged Islamist militants in a broad counterinsurgency operation in recent months.