South Africans and Egyptians were among those injured when an explosive device went off, hitting the bus in Giza.
Calmness in war-raged Afghanistan for a few months was disrupted after an explosion hit Kabul central today killing 7 people.
The blast was the latest reminder of continued industrial risks in China.
Media reports say a huge quantity of illegal explosives was stored at the factory.
Interior Secretary Eduardo Ano says the couple were aided by local terrorist group Abu Sayyaf, which acted as a guide in the bombings that also injured about 100 people.
Two firefighters had died and 10 people, including one firefighter, had serious injuries.
A group of five have arrived in the capital two days after a blast hit a tour bus killing three Vietnamese holidaymakers and an Egyptian guide.
Numerous customers at the restaurant on the building's first floor said they smelled gas at the time of the explosion.
It is the third attack against the election campaign process this month.
Source of blasts and tremors still a mystery but unconnected to any earthquakes.
Syrian state media also reported the blasts at the Mazzeh airbase, on the western outskirts of Damascus, but did not mention any casualties.
IS said the attack was carried out by a suicide bomber.
Activists raise concerns over a proposed tunnel to connect to a six-lane highway which could require close to a tonne of explosives during construction.
It comes amid a drive to strengthen industrial safety, with China ramping up checks over the last year, in the wake of some high-profile incidents at coal mines and chemical plants.
Two explosions at fireworks workshops outside Mexico City on Thursday killed at least 24 people, including rescue workers, and injured dozens more.
Islamic State claimed the attack in a statement via its online Amaq news agency, but provided no evidence for the claim.
Images broadcast on Zimbabwean TV showed scenes of chaos and medics fighting to save those wounded by the blast at the White City stadium in the country's second city Bulawayo.
Emergency services rushed to the area and the station closed down.
Security forces found a large container of explosives, rocket-propelled grenades, suicide vests, and ammunition near the site.
Ten others were injured in the Wanlaweyn market blast.
Trump had met with his cabinet and vowed to make "major decisions" within the next 24 to 48 hours, amid mounting speculation about a US military response.
Local media has reported that the explosion was at a Goodwill thrift store.
Video circulated on social media showing several bare-chested men and young boys appearing to struggle for breath, with some holding nebulisers to their mouths and noses.
For the second time in three days, the city carnival in Oruro was disrupted by a fatal natural gas tank explosion.
12Page 1 of 2