NAKHON SI THAMMARAT: Five people were killed and one seriously injured after a pickup they were travelling crashed into a tree on a highway median strip in Tha Sala district of this southern province early on Sunday, police said. The accident occurred at about 3.30am on Highway 401 (Nakhon Si Thammarat-Surat Thani) near Moo 5 village in tambon Sa Kaew, Tha Sala district. Pol Lt Col Kasemsit Champathong, deputy Tha Sala police chief, said a preliminary investigation revealed that the pickup, with six people on board, was heading from Nakhon Si Thammarat town to tambon Chalong in Sichon district…