Anti-government "Red-shirts" on Wednesday afternoon clashed with joint police-army forces in north Bangkok, leaving one soldier dead and at least 16 protestors injured.
A soldier was killed during the clashes with protesters at the National Memory in north Bangkok's Don Muang area, Thai TV 3 said.
The "red-shirts" were heading to stage a rally at a market in Pathum Thani province, 70 km north to Bangkok to show moral support for the protestors there.
Hundreds of the joint police-army forces blocked the road in Bangkok's Don Mueang area to prevent the protestors from moving further to reach their targeted area.
Shortly before 02:00 p.m. (local time), the security forces started firing rubber bullets into the sky as they were attempting to retake the Vibhavadi Rangsit Road blocked by the protestors.
By 02:50 p.m. (local time), sound of rubber bullet firing was still heard and teargas was used by police to disperse protestors.
About 03:05 p.m. (local time), clash ceased due to the on-going heavy raining.
Two hours later, the protestors retreated to the rally site in central Bangkok.
At least 16 were injured in the clashes, Public Health Minister Jurin Laksanawisit told a press conference.
10?were admitted to Bhumibhol Hospital and the rest were treated at other hospitals, he said.