A spokeswoman said: "Police believe this has been a targeted, domestic-related incident."
The scene was heavily guarded by police today and a white forensics tent had been set up in the front yard of the brick-built terrace house.
One woman in a nearby property, who declined to be named, said: "All I saw were lots of blue lights and this morning they said someone had been murdered - a lass, I think.
"It's a good estate - you don't expect this."
More top news
Downing Street is likely to confirm that the UK will fund extra security guards at the Eurotunnel perimeter.
Very warm in the southeast tomorrow
An astronaut on the International Space Station has shared his experiences from outer space in the first Twitter chat from the craft.