As a young South African woman prepares for her first court appearance in Thailand for drug trafficking, a mother, whose son faces the death penalty in Malaysia for the same crime, has appealed to parents to warn their children about the perils of drugs. The appeal by Ria Zeelie, whose son Deon Cornelius, 30, was sentenced to death in Malaysia in 2014, follows the weekend arrest of Vanessa Ann du Toit.She is the second South African to be arrested on drug-trafficking charges in a week.Another South African woman was arrested in Panama for drug trafficking last week.Du Toit was arrested with Ukrainian national Yaroslav Yanovski after they landed in Bangkok on Friday.Du Toit, on a South African police drugs watchlist since last year, was allegedly found in possession of 2.5kg of cocaine.Yanovski was allegedly caught with 4kg of cocaine.Hawks spokesman Brigadier Hangwani Mulaudzi said the pair were arrested shortly after landing in Thailand.Both had flown on the same flight from Sao Paulo via Ethiopia."Du Toit flew from South Africa via Angola to Sao Paulo, where she allegedly collected the narcotics."He said the arrests were made following liaison between police in South Africa, Brazil and Thailand.''In a follow-up operation by Thai police, a Thai woman who had come to the airport to collect the drugs from the suspects, a Nigerian national and a Guinean national were arrested."They seemed to be part of an international narcotics network."Mulaudzi said Yanovski was arrested after he was identified through his airline booking."It was made exactly the same time as Du Toit's and paid for by the same person at the same travel agency," he said.For Zeelie and her family the past two years have been a living hell."We are not sure when the execution will be. Deon is trying to appeal it and will write to the Malaysian king to ask for leniency."Every day we pray for good news. We have been unable to visit him, which is terrible."She said the day before Cornelius flew he phoned her to say he was going to Singapore for work."He would not say what the job was. The next I heard he was arrested for carrying crystal meth. Since 2014 he has been on death row, and for what?"The government must become involved and warn children about the dangers of drugs."Patricia Gerber, director of Locked Up - an organisation that campaigns for the rights of South Africans imprisoned overseas - said more than 3000 South Africans were incarcerated overseas on drug-related crimes...