A riot broke out in Thung Song prison in Nakhon Si Thammarat province on Sunday, after a group of inmates attempted to break out of the prison, a <i>Post Today</i> report said.
The report said about five prisoners tried to escape from the prison compound.
A warder was also assaulted by one of the inmates with a sharp object. The injured warder was sent to Thung Song hospital.
The situation was now under control, the report said.