AN ELECTRICAL technician will appear in court tomorrow following a police manhunt for the Tuen Mun ''serial rapist''. The married man, 26, was charged yesterday with one count of rape and one of robbery. Police investigating last week's murder of 50-year-old Ms Lee Hing at Yau Oi Estate and a series of rapes in the area arrested the man as he left his flat in a Tuen Mun housing block on Friday morning. Superintendent Patrick Pong Wai-lung said the arrest was made after the man was identified by one of his alleged victims as he was leaving the block to go to work. He was taken to Tai Po police station where he is being held. Superintendent Pong said further inquiries are being conducted and would include blood and DNA tests. ''We are not looking for anyone else at the moment,'' the officer said. He also called for any unreported victims or witnesses to come forward with evidence that might help in the investigation. At least six women living in Yau Oi, Tai Hing and Kin Sang estates are known to have been sexually assaulted since last April, although police believe other attacks have gone unreported.