BBC News - SECC murder accused Clive Carter denies cover-up bid 24 October 2013 Last updated at 14:57 A security guard charged with murdering a woman with a fire extinguisher at Glasgow's SECC complex has denied deliberately attempting a cover-up. Clive Carter, 35, from Motherwell, told the High Court in Glasgow: "I don't remember destroying the evidence." He has denied murdering Khanokporn Satjawat, 42, from Thailand, at the Clyde Auditorium on 12 November 2012. Carter has lodged a special defence, admitting culpable homicide due to diminished responsibility. She sustained massive head and facial injuries after being battered with a fire extinguisher in a female toilet. The court was heard how Mrs Satjawat's blood was found on Carter's trousers and on the sleeve of his work blazer and cuffs of his shirt. Carter, from Motherwell, North Lanarkshire, was working as a security guard at the venue at the time of the incident. He has claimed he has no memory of the killing. He said he remembered arguing with his victim and the next thing he recalled was eating his sandwiches for lunch minutes later. No memory Giving evidence for a second day, father-of-three Carter was asked by advocate depute John Scullion, prosecuting: "Did you tell a psychiatrist that you have always known that you were responsible for the killing of Khanokporn Satjawat?" He replied: "I was looking back on things. At the time of the incident I wasn't fully aware, it was only after having time to reflect. Carter was asked why he had lied to the police and told them he had seen an Asian man walking about with a fire extinguisher and had taken it from him. He replied: "At the time I thought I was helping the police." Helping police When asked if he had in fact seen an Asian man Carter said: "In my head, yes." Mr Scullion said: "Was it because you knew that two delegates had seen you with a fire extinguisher," and Carter replied: "I don't know." He then added: "At the time I didn't know that." Carter also told the jury he had no memory of washing blood from the fire extinguisher and then hiding it in a room in the complex. Mr Scullion said: "You took the fire extinguisher down from the second floor to room 136 and the purpose for that was to clean it of blood," and Carter replied: "I don't remember." He also denied hiding his bloodstained G4S blazer. When asked by Mr Scullion: "This is all utter rubbish isn't it," Carter replied: "No it's not." Carter denies murder Mrs Satjawat and attempting to defeat the ends of justice by hiding evidence.