Police have launched an investigation after a woman and a four-year-old boy were found dead at a home on a quiet residential street.

The pair - who have not been formally identified - were found by a member of the public inside the two-storey property in Newmarket, Suffolk, on Friday afternoon.

Neighbours said woman and her son "kept themselves to themselves" but that he was "always smiling".

Police later confirmed the woman was aged 28 and the boy was four. They are not looking for anyone else in connection with the inquiry.

A police cordon remains in place around the property, a semi-detatched home on a narrow street of around 30 properties.

Police at the scene in Park Avenue in Newmarket. Credit: PA

A Volkswagen Golf hatchback is parked on the pavement out side the property, which is also situated behind the police tape.

One neighbour, who lived opposite, said: “I came home last night about 8pm and there were feds (police) everywhere.

“They were here all night, I think, and forensics were going in and out.”

He said he knew the woman by sight but had only spoken to her once.

“She, like everyone I suppose, kept herself to herself. I only spoke to her once to collect a parcel.

“The boy seemed happy enough though. He was a youngster, maybe seven or eight. He was always smiling every time I saw him.”

Another couple, who also live on the street, said they had seen the boy playing in the nearby park.

They said: “They kept themselves to themselves.

“There are a lot of rented houses on this street so a lot of people come and go.”

A black Volkswagen appeared behind the police cordon. Credit: PA

An elderly resident said there were only a handful of home owners on the street, and that the majority were rental properties.

She said: “I’ve been here for 60 years and it’s quite a quiet street.

“Very sad though, isn’t it. Tragic.

“There are so many new people moving in and out of here. I daresay I knew her by sight, but I didn’t know her.”

Suffolk police were called to the scene just before 6pm on Friday. Credit: PA

A witness told the Newmarket Journal he had seen a woman come out of a property “in tears”.

“I could hear her saying she was ‘so afraid’,” he told the paper.

Another woman, visiting the street, said her friend had seen a male neighbour who apparently knew the female victim being comforted by another person yesterday evening.

Suffolk Police said officers were called just before 6pm. They have appealed for anyone with information to come forward.

The force said: “A member of the public reported to police he had found a woman and a young male child both deceased inside the premises.

“A police investigation into the circumstances of the deaths is currently under way. Next of kin are aware.

“Police would like to hear from anyone who was in the Park Avenue area during the day and who may have seen or heard anything that could assist the inquiry.”