Thinking he will hide the evidence he was the killer, the teenager murdered 17 neighbors from six different families in the village of Yema. The victims included 11 males, many females and three children. The youngest was a 3-year-old girl and the oldest 72. This was one of the bloodiest mass slayings in China in recent years. The criminal was arrested on Thursday in the provincial capital of Kunming, about 200 kilometers (120 miles) away, after 33 hours of “arduous investigation.” It was not immediately clear how the victims were killed. Yang Qingpei confessed murdering. He normally worked in Kunming, the provincial capital. Police say the murders are not connected to terrorism. The Ministry of Public Security has sent a working group to oversee the case and help local authorities in the investigation.