In Thailand, authorities have detained four Chinese nationals for unlawfully entering the site of a collapsed under-construction high-rise in Bangkok following the powerful Friday earthquake.

Police revealed that they were attempting to remove 32 files of documents from the site, which is now under investigation due to its connection to a Chinese-backed construction firm.

The 30-storey building crumbled within seconds during the 7.7-magnitude earthquake. Following the earthquake, the Bangkok Governor declared the site a disaster zone and restricted unauthorised access.

Thailand has confirmed that the death toll has reached 18 and 32 injured, with 82 people missing following the powerful earthquake.