A domestic helper killed his girlfriend after she made him jealous of another boyfriend she had in Saudi Arabia, a jury heard yesterday. Reynaldo Francisco, 49, has pleaded not guilty to murdering 27-year-old Dionisia Guillermo, who was also a domestic helper in Hong Kong, on July 18 last year. Prosecutor Richard Donald told the jury Francisco worked in the Pak Sha O Youth Hostel in Sai Kung as a domestic helper for Paul Etherington. On the night of the killing, Guillermo was staying at the hostel with Francisco while Mr Etherington and his girlfriend, Sara Cheung, attended a wedding banquet. At the banquet, Ms Cheung received a call on her mobile phone from Francisco saying he had just killed his girlfriend, the jury heard. Ms Cheung passed the phone to Mr Etherington, who heard Francisco repeatedly saying Guillermo was dead. The accused told Mr Etherington that he would kill himself before hanging up the phone, the jury was told. Mr Etherington then phoned Francisco, who said he killed the woman because she made him jealous of her boyfriend in Saudi Arabia. When cross-examined by defence counsel Edward Laskey, Mr Etherington said he might not be able to recall exactly what Francisco had said on the phone as it was noisy at the banquet. But Mr Etherington said he was sure Francisco sounded serious when he said he would kill himself by drinking insecticide. Guillermo's body was found in a pool of blood by an off-duty police officer that night at 10.35, the prosecution said. The prosecution added the officer found the accused lying on the floor of the bathroom after appearing to have vomited. The jury heard the victim died of brain injuries which could have been caused by a wooden stool. The Court of First Instance hearing before Mrs Justice Verina Bokhary continues today.