A team headed by a South African police official has been set up to investigate allegations three Hong Kong tourists were wrongly jailed and beaten by police in Johannesburg last month. Consul-General Delina Steenkamp said the team was headed by National Deputy Commissioner of Police Andre Pruis, reflecting how seriously the matter was being taken. The tourists - Ma Tang-fung, 35, his wife Ho Yuk-ngor, 34, and Law Yiu-fai, 45, - said they had been told they would be briefed about an interim report yesterday, but Ms Steenkamp said that was a misunderstanding. The investigation would take longer to complete so 'fully satisfactory' results could be achieved. The trio arrived in South Africa on February 9 for a week-long package tour to Johannesburg. They said that on arrival they had extended their permits so they could return to the city on their way back to Hong Kong, after visiting friends in Gabon, west Africa. But when they left Johannesburg, they were arrested on suspicion of carrying fake passports and for allegedly falsifying their stay permits. During the three-day detention, they said they were beaten by a policeman, forced to sign a confession and called 'China pigs'. Friends and officials from the Chinese Embassy helped secure their release. The tourists have provided the name of the police officer who they alleged beat them and called them 'China pigs' but could not remember the name of the immigration officer handling their entry, Ms Steenkamp said. She said it would be a serious offence if the allegations were substantiated. 'If it's proved true, it would of course be a big regret. But at the present stage, I won't speculate on it.' Ms Steenkamp said she was seeking confirmation from the country about the tourists' status. The three are worried they are on a blacklist.