Convicted child killer Agnes Wong Siew Ting has returned home without the knowledge of the Malaysian Government nor the Royal Malaysian Police.
Britain's secret sending back of Wong, 29, and the non-disclosure of her return has triggered a diplomatic storm, according to the UK's Daily Mail.
The whereabouts of Wong, 29, who reportedly had two prior cases involving abuse of children before going to Britian, is unknown.
She was given a 4,500 pounds (S$10,381) 'bribe' to leave Britain after serving half of her five-year jail sentence for killing Hugo Wang Jia Jin Situ, a 17-month-old boy.
According to the Daily Mail, Wong was accompanied by British immigration officials on the flight to Kuala Lumpur.
It quoted an unamed Malaysian Home Ministry official as saying that the UK was treating Malaysia with contempt.
"We are infuriated about this. Why didn't they tell us she was coming back? We should have been told beforehand so we can monitor her," the paper quoted one official.
A British Home Office spokesman responded by saying: "Where an individual voluntarily leaves the UK, it is not usual practice to discuss the return with a foreign government."
Immigration officials handed Wong a letter confirming that she was entitled to a 'voluntary reintegration fund' payout of up to 4,500 pounds (S$10,381).
The money, provided by UK taxpayers but administered by an international migration organisation, could be "invested" in training for a new job, housing, education, medical treatment or to help set up a small business.
The letter advised Wong, who was kept in an immigration detention centre between her release from jail in July and her deportation earlier this month, how to claim the money.
David Wood, the UK Border Agency's director of criminality and detention, has defended the scheme , saying: "We don't want foreign criminals in the UK.
"Every day that we can get these individuals out of the country early removes the risk they present to UK citizens and saves our taxpayers more in detention costs as well as administrative and court costs.'"
Wong was convicted last year for the manslaughter of Hugo, who she was supposed to be looking after at her home in Salford, Greater Manchester.
Hugo's father Xitu Yian Lin and mother, identified only as Zhen, both immigrants from China, worked at the China City restaurant in Southport, where Liverpool captain Steven Gerrard is a regular.
The court hearing was told that she swung the baby by the ankles and smashed his head, leaving him with fatal brain injuries.
The unregistered childminder, who came to the UK in 2003, was paid 120 pounds (S$276) a week to look after Hugo in her home in Salford, Greater Manchester, while the boy's parents worked 16 to 20 hours a day to make ends meet.
She was accused of waging a 'regime of terror' against him, torturing him with a hairdryer and hitting him so hard with a ruler that it snapped.
Hugo died in January 2007, a day after he was taken unconscious to a hospital where he underwent emergency surgery.
He had apparently been struck with such force that his brain had shifted in his skull and caused internal bleeding. Doctors also found bite and burn marks on his body.
Meanwhile, CID Director Comm Datuk Seri Bakri Zinin said police will liaise with their British counterparts to establish the whereabouts of Wong.
He said police were aware that she had returned.
"We will keep track on those who are registered law offenders. Even though they had served time, we have to keep track of their movements.
"So far we have yet to receive any information from our British counterparts pertaining to where Wong is," he said.
