A 33-year-old relative has been arrested in connection with the deaths of two adults and two children whose bodies were found at an address in Newcastle, Northumbria Police said.
A police spokeswoman said in a brief statement: "Police investigating the deaths of four people at a house in Hawthorn Gardens, Kenton, have this afternoon arrested a 33-year-old male relative.
"The man was arrested at an address in Gateshead and has been taken to Etal Lane police station for questioning."
Earlier Northumbria Police said they went to a house in Hawthorn Gardens, in the Kenton area of the city "acting on information received".
Neighbours of the family in the leafy residential suburb spoke of their shock after hearing about the deaths.
One neighbour said they were unaware of anything untoward at the house until police arrived in the area.
Northumbria Police sealed off the quiet street, which consists of 1930s style semi-detached housing, while investigations continue into what happened.
Elizabeth Cessford whose garden backs onto the family's home, said they were a lovely family and it was as tragedy.
"I used to see them in the garden, which was just full of toys," she said. "I used to see the children playing in the garden and they were laughing and enjoying themselves.
"I'm absolutely devastated, I'm really shocked."
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