Police arrested four people, including a father, for selling his 10-year-old step daughter to a 65-year-old man on Sunday. According to details, accused Muhammad Riaz, a resident of village Chak 170-DB, sold his step , 10, to 65-year-old Sher Muhammad for Rs 110,000. The victim escaped from the custody of Sher and reached the Mouchiwala Police Station. Police, on complaint of Suraiya, arrested Riaz, Sher and two others. Riaz said that he was facing financial problems and had to repay a loan due to which he sold her. The victim said that Sher and his three accomplices raped her for two months. Police registered a case against six people and arrested four people.