Dominic Soo Chun-sau casually ate noodles at a 7-Eleven store just hours after he fatally stabbed his lover, Tracey Chan Fung-han, his murder trial heard yesterday. But the store's security camera revealed something else: Soo had changed the clothes he had been wearing during dinner with Chan that evening - February 7 last year. Those clothes have never been found by police. The outfit change and other circumstantial evidence would prove Soo was guilty of murder, senior government counsel Diane Crebbin told a jury of six men and one woman in her opening address yesterday. Chan's decomposing body was found in a remote part of Lau Fau Shan on February 27 last year, several weeks after her disappearance. At least 10 wounds to her back and chest suggested she had been stabbed, the jury in the Court of First Instance heard. 'The number and depth of the wounds suggest this was some sort of frenzied attack,' the prosecutor said, noting there was no evidence of robbery or sexual assault. 'Most likely it was a jealous rage ... after [the victim] arranged to meet an ex-boyfriend.' Within a month of meeting Chan, 36, at a first aid conference in 2006, the 'besotted' Soo, then 32, left his wife and baby daughter to move into a Happy Valley flat near the victim's home. The evening she disappeared, Chan and her accused killer went shopping at a sports store in Tuen Mun. Afterwards, the couple headed to Lau Fau Shan for dinner. In police interviews, Soo said he and Chan had finished dinner and driven away. The victim then left Soo's car near the restaurant to meet an unidentified person, Soo told police. Police learned that Soo's car was steam-cleaned the morning after his dinner with Chan. Days later, he moved out of the new flat because it made him 'very uncomfortable', the court was told. Mobile phone records suggest Chan called her ex-boyfriend shortly after the dinner, near a pond that Soo and she had visited before, the court heard. The area was only accessible by car or public transport, which had already stopped for the evening, Ms Crebbin said. No taxi drivers had reported driving the victim to the site. Soo's trial continues next week before Mrs Justice Verina Bokhary.