Gunmen have killed at least five soldiers near Egypt's northeastern city of Ismailiya while a deadly blast hit Sinai Peninsula, killing five people and injuring about 50 others.

The first incident took place on Monday when masked gunmen opened fire on the soldiers who were on patrol in a pickup truck in an area north of the Suez Canal city. Officials say an army lieutenant was among the victims.

Security forces have been the target of several attacks in Sinai in recent weeks.

In another attack, a large car bomb struck a security headquarters building in the southern Sinai city of al-Tour. At least five people were killed and around 50 others wounded in the blast.

A rocket attack also hit a satellite station in a suburb of the Egyptian capital of Cairo on the same day, damaging a satellite dish.

The fresh attacks come a day after at least 53 people, mostly supporters of ousted President Mohamed Morsi, were killed in clashes with security forces across the country.

Egypt has been experiencing unrelenting violence since July 3, when the army ousted Morsi, suspended the constitution, and dissolved the parliament. It also appointed the head of the Supreme Constitutional Court, Adly Mahmoud Mansour, as the new interim president.

The government of Mansour has launched a bloody crackdown on Morsi supporters and arrested more than 2,000 Brotherhood members, including the party’s leader, Mohamed Badie, who was detained on August 20.

About 1,000 people were killed in a week of violence between Morsi supporters and security forces after police dispersed their protest camps in a deadly operation on August 14.

The massacre sparked international condemnation and prompted world bodies to call for an independent investigation into the violence.