Triple murder suspect Arthur Simpson-Kent has been arrested at Heathrow Airport after being extradited from Ghana.

The 48-year-old was held at Heathrow after arriving in the UK on a flight just after 5am on Friday (February 12).

Mr Simpson-Kent was then arrested on suspicion of the murders of Sian Blake, 43, and her children Zachery, eight, and Amon, four, at their home in Erith, Greater London.

Simpson-Kent left the family home on Wednesday December 16 to live on a coconut plantation on the West African coast.

He was arrested in Africa on Saturday January 9 after villagers in Butri led police to a cove where he had been ­swimming. He told a court last month he would return to the UK freely to face the charges.

One month after his arrest, Simpson-Kent was handed over by the Ghanaian authorities to Scotland Yard. He was guarded by police on the plane and arrested when he arrived at Heathrow.

READ MORE: Suspect in Sian Blake murder investigation spotted attempting to leave UK from Heathrow Airport

In Erith, the missing persons search for Sian and her children became a murder hunt when their bodies were found buried in the family's back garden on Sunday January 3, where a knife was used on the children.

Metropolitan Police officers arrived in Accra, Ghana on Tuesday (February 9), filled in all the paperwork necessary for the hand-over on Wednesday (February 10) and brought the suspect back on the night of Thursday February 11.

Mr Simpson-Kent is currently in police custody at a west London police station.