A neighbour has told ITV London how shortly after the bodies of three children were discovered, two relatives of the family knocked on her door and were clearly very distressed.
"We heard a commotion and we saw lights and four police cars came up and one ambulance and a few other cars," Michele Bacchus said.
"A little while later my partner was outside having a cigarette and two women came up and asked if they could use the lavatory. One was fairly young and very, very upset, she could not speak.
"They were very, very upset. The younger one was in shock, they were both in shock."
More top news
The only Muslim survivor of the 7/7 terror attack in London has urged the country to stand together against Islamophobia.
Police are appealing for information after a well known DJ was shot five years ago in north London.
More than 100 firefighters battled for five hours to bring a huge warehouse fire under control.