A man shot five people to death - including a 12-year-old boy - and wounded a police officer before killing himself in northeast China's Jilin Province Monday morning. The dispute apparently was the result of a longstanding business grudge that turned violent. It ended in a series of methodical murders and a police chase into the mountains, where the alleged killer ended his life. The 47-year-old gunman was identified only by his surname, Zhang. The victims included Zhang's former wife, a friend, the father of his ex-business partner and the young boy. The gunfire began around 10am in Guoqing Village in the city of Liaoyuan City, the City Evening News said reported. Hearing gunshots, more than 10 villagers rushed to the home of Ye Chengfa. Witnesses said Zhang shot 68-year-old Ye and his 60-year-old wife to death with a homemade pistol. Ye was killed at the door of his house, while trying to resist the assault with a wooden pole, a villager surnamed Li told the newspaper. Zhang then aimed his weapon at the gathering crowd shouting, "Get out of my way if don't want to die." The villagers fled to Li's house and called police. But the violence continued. Zhang walked over to several children and asked them to identify Ye Chao - Ye Chengfa's grandson. The villagers saw Zhang drive away the other children and take 12-year-old Ye Chao to his grandfather's house. A gunshot sounded, and the boy was later found dead. Zhang also fired at police officers who arrived at the home, leaving one with a minor leg injury. As more officers arrived, Zhang fled to the mountains behind the village. He was cornered about halfway up and shot himself in the head as officers closed in, authorities said. Police said Zhang killed his ex-wife and a friend surnamed Yang before going to Ye's house. Officers said he shot Yang because the man refused to drive Zhang to Ye's house on his motorcycle. Investigators said they believed Zhang was motivated by a conflict with Ye Chengfa's son, Ye Wen. The two had cooperated in a deal to sell silica to a local factory, but the partnership broke up and led to a lawsuit, which Zhang lost. Police also said a bomb was found in front of the factory's manager. It was removed without incident. Also on Monday, a man killed his hostage and then committed suicide in an apartment in Shishi City, Fujian Province. The unidentified man had kidnapped a 30-year-old woman surnamed Wang, owner of a hardware store, and tried to extort money from her family.