Security officials and witnesses reported bodies strewn on the ground as plumes of smoke rose high into the air after the bomb detonated on Mogadishu's Maka Al-Mukarama road, one of the seaside capital's main thoroughfares, an area busy with businesses and travellers.
China will launch a month-long, nationwide inspection campaign into hazardous chemicals, mines, transportation and fire safety
The blast occurred on Thursday at the Chenjiagang Industrial Park in the city of Yancheng, in Jiangsu province, and the fire was finally brought under control at 3.00am on Friday (1900 GMT), state television said.
Afghan security forces are facing almost daily attacks by Taliban militants, despite reported progress in efforts by the United States to broker an end to Afghanistan's nearly 18-year war.
A powerful bomb blast outside the gates of Kabul University in the Afghan capital on Friday killed at least eight people and wounded 33, as students and lawyers waited to take an examination, officials said.
A leading Sudanese activist Nazim Sirraj told the media on Monday that three bodies were found next to a school in Omdurman, the twin city of the capital, Khartoum, after the rallies the day before. He says the three were shot dead.
The rush-hour explosion sent a plume of smoke into the air above the Puli Mahmood Khan neighbourhood of the Afghan capital and shook buildings up to two kilometres (1.2 miles) away, with the media reporter saying he could hear gunshots after the blast.
The exact locations of the strikes were not known, but the roar of airplanes over the city was accompanied by heavy explosions between 11.00pm and midnight.
Intelligence warnings from abroad alerting to possible attacks by Islamist extremists were ignored ahead of the multiple bombings of churches and upscale hotels on April 21 that killed 253 people and injured nearly 500.