Madina Police have arrested six relatives of the alleged Yanbu housemaids' serial killer, who were allegedly involved in forging identity cards and impersonating Saudi nationals. Sources said those being held are of Arab origin and are relatives of Owdhah, the alleged Yanbu serial killer, who is suspected of raping and killing three housemaids in Yanbu governorate. Col. Abdullah Saud Al-Sarrani, Director of the Anti-forgery Unit in Madina, said all documents of the arrested persons have been seized. He said his administration has not proven their involvement in the killing of the housemaids. – Okaz/SGOkaz/Saudi Gazette have learnt that the investigation authority has obtained documents described as being of great importance and directly related to the Yanbu serial killer case. The sources preferred not to disclose the contents of the documents to ensure the confidentiality of the investigation.