A man gunned down three persons including his wife and mother in-law and injured another over domestic dispute here late Monday night. According to details, accused Ubaidullah hailing from Green Town had two wives. One of his wives was living at her parents house. The accused often visited house of in-laws and demanded his second wife identified as Fatima for giving him money. On late Monday night, Obaidullah as usual went to the house of his in-laws and demanded money from wife. Upon refusal he opened fire killing his wife Fatima, mother in-law Khursheed Bibi and step son Salman and injuring other son Zaheer critically. Later the accused fled the scene after committing triple murder. The bodies and injured were shifted to hospital for medico legal requirements. Meanwhile, in Samanabad area of Lahore Bushra, 25, mother of a child suffered severe burn wounds due to fire in the house. She was rushed to Mayo Hospital where she died before getting treatment. The parents of deceased blamed that Bushra was intentionally set ablaze by in-laws who were not happy with her. The police registered separate cases in both incidents and started the investigations.