Two Vietnamese holidaymakers and an Egyptian tour guide were killed and 10 others wounded when a roadside bomb exploded near their bus as it travelled close to the Giza pyramids in Cairo, Egypt's interior ministry said in a statement.
The ministry did not say whether the suspected militants were connected to Friday's attack, but said its forces killed 30 people during raids on their hideouts in Giza where it said "terrorist elements" were planning a series of attacks targeting state institutions and the tourism industry.
Two Vietnamese tourists were killed earlier on Friday and ten others were injured in a tourist bus explosion in Marioteya district, near Giza governorate.
Prime Minister Mostafa Madbouli was due to visit the injured tourists in hospital after following up with his ministers on the incident, a government statement said.
The Egyptian military launched a large scale operation dubbed "Sinai 2018" in February to rid the Sinai Peninsula of IS jihadists after an attack on a mosque in the north of the peninsula killed more than 300 people. The bomb went off when the bus went by, authorities said.
A makeshift explosive device placed next to a wall on Al-Marioteya Road was detonated at 6.15 p.m.as the bus rolled past, according to the interior ministry.
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Felipe "always wanted a bicycle" and their father saw the U.S.as a way to help get their family out of poverty, Gomez Lucas said. In a similar case, a 7-year-old girl died after traveling through Mexico and crossing the border illegally with her father.
Tourism is a mainstay of the economy.
But that figure was still far short of the record influx in 2010 when over 14 million visitors flocked see the country's sites.
The interior ministry confirmed the death of two of the tourists, and the state prosecutor's office later said a third had died.
The pyramids are one of the world's major tourist attractions, drawing nearly 15 million visitors every year.
In 2015, ISIS claimed responsibility for a blast that downed a Russian airliner and killed all 224 people aboard shortly after it took off from the Egyptian holiday resort of Sharm El Sheikh.