A housewife told police she had killed two women, both in their 80s, by mistake when she went to collect debts from them, a court heard yesterday. The assertion was made by Li Sui-heung, 50, after she was arrested in May last year over the killings of Ng Kai-luen, 81, and Yen Suan, 87, whose battered bodies were found in their public rental flats in 2006 and last year, the Court of First Instance was told. Both bodies had severe head injuries and were covered by cloths, prosecutor Edmond Lee Chun-man said. Their hands had been bound with tape. Li, represented by barrister Richard Donald, has denied murdering the two women, saying she had not intended to kill them. Mr Lee told the jury that Ng's body was found by a neighbour on December 8, 2006, in her flat at Shek Fong House on Shek Wai Kok Estate, Tsuen Wan. A post-mortem examination revealed Ng had suffered seven heavy blows to her head and could have been dead for a day before her body was found. Yen was found by her godson dead inside her home at Mei Choi House on Shek Kip Mei Estate on March 7 last year. Mr Lee said a pathologist would testify that Yen suffered at least four blows to her head three days before her body was found. The pathologist also found Yen had survived in a coma for more than 12 hours after the attack. Tape had been used to seal Yen's mouth, Mr Lee added. Arrested by police in Tin Shui Wai on May 14 last year, Li initially told officers she had gone to the victims' homes to collect debts from them and had not intended to kill them. But she changed her version later and said she had demanded money from Ng, then beat her with a wooden pole during a dispute. Mr Lee said Li also told police she followed Yen home and asked her for money. Yen had given her a pair of gold earrings but she had kept demanding more. When Yen screamed, Li had used tape to cover her mouth and tie her hands, then kicked her head a few times. Li told police she had sold the earrings for about HK$400 in a Mong Kok jewellery shop that day. Mr Lee told the jury the prosecution rejected Li's claims that she did not intend to kill the two women. 'It is a matter of common sense that anyone who attacks the head of an old lady must have the intent to cause really serious bodily harm,' he said, saying that constituted murder. Wong Chun-fung, of Shek Wai Kok Estate, said she had last seen Ng watching television at home on December 6, 2006, when she walked through an alley. She had knocked on Ng's door on December 8 after becoming suspicious because the door had been closed for two days. She said she peeped into the flat through a hole in the wooden door and was shocked to see Ng lying on the floor, so she called police. Kwok Ying-yi, a neighbour of Yen on Shek Kip Mei Estate, said she had last seen Yen at a market on the morning of March 4 last year. She had offered to help Yen, who walked with the aid of a stick, to carry her purchases home because she often complained of sore legs. A woman in the lift with them helped Yen to walk home. Ms Kwok said she passed the bags to the woman, who went into the flat with Yen. The hearing continues before Mr Justice Michael McMahon today.