Three children found dead in a house in London may have had disabilities, it has been claimed.

The mother of the youngsters has been arrested on suspicion of murder following the discovery of their bodies in New Malden, south London.

A neighbour of the family suggested to the BBC that the children were disabled. Sky News reported sources claiming they had "life limiting genetic conditions".

The parents were named locally as Gary and Tania Clarence. It was reported they moved in to the £1.2m Victorian property six months earlier and fitted it out with equipment for special needs.

Two boys aged three and a girl aged four were pronounced dead at the scene. A fourth child was overseas with the father and was expected to return to the UK today (Wednesday), it was reported.

A Metropolitan Police spokesman said: "A 43-year-old woman has been arrested on suspicion of murder and remains in custody.

"We are not looking for anyone else in connection with this incident."

Post mortems were due to take place.