A total of 21 people were confirmed killed by the flash floods and mudslides in southern provinces of Thailand, authority said on Friday.

The flash floods and mudslides in southern provinces of Thailand caused by heavy rainstorms that have hit several southern provinces since March 23.

The Disaster Prevention and Mitigation Department said that of the total, nine were in southern provinces of Nakhon Si Thammarat, six in Krabi, four in Surat Thani and two in Phatthalung, with another 181 people suffering injuries.

Provinces hit by major flooding are Nakhon Si Thammarat, Phatthalung, Surat Thani, Trang, Chumphon, Songkhla, Krabi and Phangnga. As many as 998,867 people have been affected and 732,655 rai of farmland submerged, according to the department.