JEDDAH: A security guard has been arrested for allegedly killing a Chinese man whose body was found Saturday in the offices of his employers in Jeddah's Al-Hamra District. Police said the suspect has confessed to the killing. The body was found lying beneath a washbasin at the company, which operates in the train sector, prompting a police lock-down of the site and questioning of staff. Investigators also studied records from electronic gates requiring staff passes, passes which grant access to limited areas of the building. The first lead they received was from a security guard at the company who said a colleague of his had exited the building shortly after the discovery of the body. The victim's driver at the company also told police he had seen the suspect and the victim together earlier in the day. Officials said the suspect was located and soon confessed to the killing during questioning the same day. According to police, the suspect told investigators that his victim had made several complaints against him due to absence from work and had also tried to have him dismissed from his post. On the day of the killing, the two were involved in a confrontation and the suspect hit his victim's head against the edge of a table before strangling him to death, according to his testimony. The suspect told officials he then dragged the body and left it beneath the washbasin before removing its shoes and throwing them on the roof of the building. He then tried to clean the scene of the crime before taking his victim's wallet and a mobile telephone, which he later sold, and leaving the site. A police spokesman praised the work of investigators in identifying the suspect in such a short space of time.