A father annoyed by his premature baby's crying had tried to put her in a fridge to keep her quiet before she died in 2003, a court heard yesterday. He also hit and shook her and gagged her with a rolled-up towel. The court was told the mother had known what was going on but had not reported it. She also had harmed her daughter. Lam Wai-shu, 27, and his live-in girlfriend, Chiu Mei-sze, 33, have pleaded not guilty in the Court of First Instance to one count each of manslaughter over the death of four-month-old Iris Lam Lok-yan on December 5, 2003. The baby had been born several weeks premature and had, according to statements by Lam and Chiu, been a restless and noisy child. The prosecution told the court that on the day Iris died, Chiu had taken a rest and discovered the baby was not moving just after 5pm. She called 999 and sought help from a neighbour. Mother and daughter were taken to Caritas Medical Centre and Iris was declared dead at 6pm. An autopsy determined the baby died from widespread brain injury and pneumonia. The examining doctor suggested the number and variety of bruises tended to rule out accidental causes. The bruising was consistent with forceful gripping. Several wounds on the baby's mouth showed signs of healing, suggesting they had been inflicted several days earlier. One superficial wound in particular did not fit the shape of any common sharp object and was probably caused by a sharp serrated edge being repeatedly dragged across the skin. Lam said during a police interview that the baby's crying had irritated him. He had told them he had violently shaken Iris in late November and other times had hit her extremities if unable to console her. He had said he would roll up a towel and put it in her mouth. Another time he placed a cushion over her head to muffle the crying. Lam recounted a time he had tried to scare the baby by placing her in the fridge; Chiu had stopped him. Chiu admitted to police she had at times used 'unintentional force' when dealing with the baby, which had resulted in bruising. She also said she had seen Lam mistreat the baby on numerous occasions. The trial continues before Deputy Judge Alan Wright today.