Thai police Sunday arrested the leader of anti-government protesters who wrecked an Asian summit, prompting a threat of further action by supporters if he is not released. Police said Arisman Pongreungrong was detained at his home in the capital following his return to Bangkok. "The police went to arrest Arisman Pongreungrong at his house on the charge of inciting protesters to kidnap the prime minister and cause unrest in the country," a police spokesman said. He said Arisman had cooperated with authorities who arrested him and took him to a police station in Bangkok's suburbs for questionning. "There will be further arrests, but right now the police are gathering evidence," the spokesman added.