A suspected anti-government protester threw bags of human excrement into Thai Prime Minister Abhisit Vejjajiva's home in the latest sign of growing political tensions, his deputy said on Tuesday.
Deputy premier Suthep Thaugsuban was quick to blame Monday's attack on "Red Shirts" -- supporters of ousted former premier Thaksin Shinawatra who have announced plans to step up anti-government rallies in the coming weeks.
"Based on an assessment of the situation I believe that it's the work of Red Shirt people. I learned about the incident yesterday and have instructed police to step up security around important people," Suthep told reporters.
Police confirmed several plastic bags containing human excrement were thrown over a wall into the prime minister's residential compound on an upmarket street in central Bangkok.
Abhisit said on Tuesday that his family were "not shaken" by the incident.
The Red Shirts are planning fresh street protests this month ahead of a court ruling on whether authorities can seize Thaksin's 2.2 billion dollar assets, frozen after the coup that deposed him in 2006.
"They want to put pressure on every party concerned prior to the verdict day," Suthep said.
Thaksin continues to stir up political unrest in Thailand, despite living abroad to avoid a jail term for graft. Both his opponents and supporters have staged numerous mass rallies over the past year that sometimes turned violent.