A British woman in her 20s is feared to have been killed in a suspected murder-suicide in Sydney.

The woman, who has not been named, was found dead along with a man in his 30s at a flat in the suburb of Newtown, the New South Wales police said.

Emergency services were called to the scene at around 5.30pm on Friday after concerns were raised for the welfare of a man and a woman at the property.

“Police attended and discovered the bodies of a woman, aged in her 20s, and a man, aged in his 30s,” the police said.

Local police and detectives from the state’s homicide squad launched an investigation and officials from the British embassy have been in contact with the woman’s family.

The nationality and identify of the man have not been released, although he is understood to not be from the UK.

A police source said the woman is thought to have been the victim of a murder-suicide.

A UK Foreign Office spokesman said: “We are providing consular assistance to the family of a British national who has died in New South Wales, Australia, and our staff are in contact with the New South Wales police.”