BANGKOK: Thai police say they're looking for more weapons believed to be part of a plot to assassinate the prime minister, after police discovered guns and thousands of bullets allegedly belonging to an anti-establishment leader.

Police found over a dozen guns, around 6,000 bullets, knives, drugs, grenades and other contraband over the weekend that they said belonged to Wuthipong Kochathamakun, who was part of the violent anti-government protests in 2010 that paralyzed Bangkok for three months and killed around 90 civilians and six soldiers.

Krisana Pattanacharoen, a deputy police spokesman, said police officers were halfway through searching over 2,000 shipping containers at noon Monday where they believe more weapons were kept.

Wuthipong denied having any knowledge of the weapons stash.