A Hamas interior ministry spokesman said security forces are making progress in their investigation to establish who was behind the blasts, but did not disclose further details.
A suicide car bomber targeted the police headquarters in a minority Shia neighbourhood in western Kabul, setting off a huge explosion that wounded dozens of people, Afghan officials said.
Initial investigations show a speeding car caused the collision.
Another 19 people were seriously injured and five others are missing.
A powerful explosion in the southern Swedish town of Linkoping damaged two adjacent buildings and injured at least 25 people, say officials.
Four of those injured were in serious condition after an explosion at an explosives factory in Dzerzhinsk, 400 kilometres from Moscow.
Officials say South Africans and Egyptians are among those injured when an explosive device went off, hitting the bus in Giza.
"A suicide bomber wearing an explosive belt blew himself up close to stalls at the crowded Jamila market," said a senior police officer, who asked not to be named.
The tanker truck exploded overnight as crowds tried to collect spilt fuel in Niger's capital Niamey, authorities and witnesses said on Monday.
Waukegan Fire Marshal Steve Lenzi said another body was found as first responders resumed searching in hazardous conditions in the shattered remains of the AB Specialty Silicones plant in Waukegan, about 80 kilometres north of Chicago.
The blast happened when a container for storing scrap metal burst into flames outside a factory in an export processing zone in Kunshan, Jiangsu province
An explosion near a military intelligence office in Syria's capital Damascus has left a number of dead and wounded, says war monitor, Syrian Observatory for Human Rights.
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