The parents of a 13-year-old boy who died after falling from the 16th floor of an apartment block yesterday called for a murder inquiry. They said they believed an attacker had thrown Chan Lin-kiu to his death in Quarry Bay and rejected preliminary police findings that he committed suicide. 'We do not believe our son committed suicide. We suspect he was killed by someone. My son would never kill himself,' his father, Chan Ying-chung, 35, said. 'Although he was a quiet and obedient boy, he would tell us what happened to him when he felt unhappy. 'He liked to study . . . and loved his new school. My wife and I never put any pressure on him. We loved him very much. I really don't see any reason why he would kill himself.' He said Lin-kiu had played video games at home with his 11-year-old sister, San-lei, and gone to bed as usual at about 11pm the night before he was found on Tuesday. Assistant North Point divisional commander (crimes), Chief Inspector Lawrence Wong Ying-wai, said that based on a two-day investigation, no foul play was suspected. 'We believed the boy jumped to his death from the 16th-floor staircase of the building.' But his father, a printing worker, did not agree. 'He hated to walk up or down staircases. We suspect he might have been attacked and dragged to the staircase,' Mr Chan said. 'My family hope police will carry out a thorough investigation into his death.' The Form One student lived with his parents, younger sister and grandparents in a sixth-floor flat in the Wai Lee Building in King's Road. On Tuesday, his mother, Tsoi Shui-sheung, 33, went to school to pick him up at about noon after Lin-kiu attended his first-day at Cheung Chuk Shan College. 'He told me he was very happy and had also exchanged his home telephone number with his classmates,' she said. His parents called him separately at about 1.15pm and detected no problems. Police said the boy left home and went to the Wellcome supermarket in Manly Plaza to buy instant noodles at about 1.30pm. At about 3pm, he was found dead by a cleaner in the ground-floor stairwell of the building.