SIX Hongkong ex-convicts who ganged up in Shenzhen to steal cars have been arrested, according to the China News Service. It said the six met in prison in Hongkong, where they were serving terms for crimes ranging from drug trafficking to robbery. After their release they met in Shenzhen in February and agreed it would be profitable to steal cars and sell them on the black market. The report said six luxury cars were stolen within the next month. The gang is awaiting trial.