A new blast hit Liucheng county in China’s southwestern Guangxi province on Thursday morning. It follows a chain of explosions on Wednesday that killed at least seven people and injured dozens of others.
The latest explosion took place on the fifth floor of a residential block. Initially Xinhua news agency said one person was injured, but its official Weibo account didn’t report any injuries.
The force of the blast caused structural damage to the building as debris scattered on to the road below, according to Xinhua.
It is not clear what caused the blast and it is also unclear if it is related to the series of parcel bombs that caused 17 separate explosions across Liucheng the day before.
The explosive devices were hidden inside express delivery packages, targeting malls, a government office, a prison, a bus terminal and a hospital among other locations.
Five people killed by the blasts died where they took place. Two more people have been reported missing and another 51 others were injured.
A video, reportedly of one of Wednesday's blasts, taken from a street surveillance camera shows a person flying out of an exploding building, while a pedestrian passing by is also knocked to the ground.
After authorities launched a criminal investigation on Wednesday, a 33-year old male Liucheng resident, surnamed Wei, was identified as the prime suspect.
Local police believe that he assigned other people to send the parcels.
Parcel deliveries have been halted by the Liuzhou postal service until Saturday.
Sixty suspicious courier parcels, now pending examination, were able to be identified with the help of the public, Liucheng’s public security political commissar said in a news conference on Wednesday.
It is easy to get hold of explosives in China, as they are much-used in the country's large mining industry.