Autopsies are scheduled Friday for two children found dead in a London, England home Wednesday night. Their Canadian mother, Felicia Boots, has been arrested on suspicion of murder.

Police have revealed little about the case, saying in a statement that a woman in her 30s was arrested Wednesday night, after they were called to an address in the posh South London neighbourhood of Wandsworth.

"The London Ambulance Service also attended but a 10-week-old boy and a 14-month-old girl were pronounced dead at the scene," Scotland Yard said in the statement.

"Post-mortem examinations will take place in due course."

Watching developments in the British capital, CTV's London Bureau Chief Tom Kennedy said local media are reporting the children were found without any marks on their bodies and may have been smothered to death.

"Post-natal depression is being speculated about, but police are saying very little about what is an absolutely terrible case," Kennedy told CTV's Canada AM Friday morning.

British tabloids have seized on the story, reporting that Boots had tried to kill herself before she was arrested.

Kennedy said Boots did not require hospitalization, but given the circumstances it is likely she is now "under very, very close watch and supervision."

Boot's investment banker husband Jeffrey reportedly arrived at the family's home Wednesday night to find his children dead.

Neighbours said they heard the man, whose family had only recently moved into the neighbourhood dubbed "Nappy Valley" for its popularity among young middle-class families, sobbing as he waited for police and paramedics to arrive.

Two hours after they got to the Boots' Killarney Road address, police took Felicia Boots away in handcuffs.

Forensic investigators have since removed several bags of potential evidence from the home, including children's clothing, documents and an Apple computer box.

The couple, both 34 years old, had moved to England from Canada.

While in London, the mother operated a home-based, handmade jewelry design business through a website called Pink Tangerine.

On her website, Boots describes herself as a Canadian-born stylist "pursuing a dream."

Writing on the business website's blog, Boots said, "I once read that 'only those who dare to fail greatly can ever achieve greatly'.

"I hope to achieve greatly."

Among the undated testimonials posted on the same website, Stephanie Ledda, assistant product manager at Wella Canada wrote, "Felicia's carefree and outgoing attitude is something I have always admired."

In a statement, Canada's Department of Foreign Affairs said Canadian officials have been in contact with British authorities concerning the death of the children and their mother's detention.

London police said they are not looking for any other suspects in connection with the children's deaths.