Character.ai has denied the suit's allegations.

One man, who police believed was the owner of the vehicle, has been arrested.Photographs of three other suspects - Fezile Ngubane, Philangenkosi Sibongokuhle Makhanya and Bongani Mthimkhulu - who are said to be on the run, have been released by police.

Two of the suspects - Mr Makhanya and Mr Mthimkhulu - were last month arrested for kidnapping and robbing a woman in KwaZulu-Natal, using the same vehicle, police said.The two are currently out on bail, according to Brig Mathe.She said the three suspects were "dangerous" and cautioned members of the public not to approach them.

"These suspects are warned to hand themselves over at their nearest police station."Ms Mongale was last seen on Sunday in the company of a man she had met a few days earlier at a shopping centre.

CCTV footage showed her leaving a location in Kew, Johannesburg, and walking towards a white VW Polo, with fake licence plates.

Her friends said she was invited for a date by a man only identified as John, who she had met in Johannesburg, where she was studying for a postgraduate degree at Witwatersrand University.Vautrin added that "the freedom to smoke must end where the freedom of children to breathe fresh air begins".

The outdoor areas of cafes and bar - known aswill be exempt from the ban, she said.

Vautrin explained that breaking the rules would incur a €135 (£113; $153) fine.She said regular police would enforce the ban but also added that she was a great believer in the "self-regulation".