The authorities arrested 16 southern environmental activists after brief clash with the protesters. At 4:30 pm on 27 November 2017, military and police officers arrested 16 key leaders of the network from Songkhla and Pattani provinces protesting against the planned coal-fired power plant and the Deep Sea Port in Songkhla. Some of the 16 are: Direak Haamnakhon, Somboon Kamhaeng, Aekachai Isarata, and others. According to Stop Coal Songkhla, the facebook page of the group, the 16 were taken to the police station of Mueang District of Songkhla. At press time, the police have not yet pressed charges against them. Several protesters were injured during the clash as the security officers used force to arrest the protest leaders. At the same day, Panawat Pongprayoon, the leader of a group called Thepha Development, with about 20 supporters handed a letter to the military at the 46th Military Circle in Pattani Province. The group state that they with 67 associated local organisations whose members numbered about 50,000 support the Thepha power plant project, adding that its construction should be done as soon as possible. The anti-coal fired power plant next work started their rally on 24 November. They aimed to submit a petition to Gen Prayut Chan-o-cha, the junta leader and Prime Minister, asking the government to cancel plans for a 2,200-megawatt power plant and Deep Sea Port.