A man accused of throwing corrosive drain cleaner onto a busy street in Causeway Bay said he did so because he heard a voice in his head saying it would cause his neglectful friends to call him, a court heard yesterday. Lo Sing-cho, 24, said he abandoned plans to throw a second bottle into the pedestrian area behind the Sogo department store after one of his friends in fact did call him, the Court of First Instance was told. The unemployed man, who has pleaded not guilty to throwing corrosive fluid with intent onto six pedestrians in Lockhart Road on December 12 last year, told police he had been upset because his friends did not answer his calls, senior prosecutor Peggy Lo Suk-ling said. The defendant claimed a person he called Ah Man had told him by telepathy that a friend would call if he threw the acid, the prosecutor said. She was speaking on the second day of the trial, during which the court has heard two severely injured victims tell how liquid fell on their heads and they felt scorching pain. While Lo Sing-cho has denied a charge of throwing corrosive fluid with intent, he offered to plead guilty to a lesser charge of inflicting grievous bodily harm on Lai Tun-man and his girlfriend, Tong Lai-ming, which the prosecution did not accept. Yesterday Peggy Lo said the defendant had denied intending to injure anyone but admitted he was responsible for the injuries caused to the victims. She said he argued he only wanted to cause a commotion by landing the bottle on the canopy of the building, leading people to think something had fallen, which the prosecution did not accept. She said a psychiatrist would be called to give evidence on whether Lo Sing-cho had mental problems. The court heard that after Lo Sing-cho was arrested on January 13, he told police he was unhappy on the night of the attack so had bought two bottles of drain cleaner near his home on the Yiu Tung Estate in Shau Kei Wan. Later he called his friends but they did not answer. He told police Ah Man communicated with him through 'brainwaves' and 'superpower' urging him to shower acid onto a Causeway Bay street, although he did not want to. He sent a text message to his friend Law Tin-chun at 10.05pm just before the attack, saying: 'All things were caused by you ... you said I followed you ... that means you won't pay attention to me any more??? Something corrosive will be thrown on the street in Causeway Bay very soon ... I don't want to do it....' He then threw the first bottle but Law called him so he did not throw the second, the court heard. The trial continues before Mrs Justice Judianna Barnes Wai-ling.