Police have established a crime scene after a man and a woman were found dead at a home in the Brisbane suburb of Stretton on Monday morning.
A 49-year-old man was arrested after officers responded to calls to the home on Coolidge Street after 9:30am and located the two people deceased.
Detective superintendent Andrew Massingham said the scene was confronting, and described it as a "frenzied attack" on a woman in her 40s and a man in his early 20s.
"At approximately 9:40am this morning, certain information was received by triple-zero, that an incident had occurred at [Coolidge Court, Stretton]," he said.
"A number of police units attended a two-storey brick home where they were met at the door by a 49-year-old male person.
"That male person unlocked the front door and was seen to be suffering some injuries to his arms and legs.
"Police then ascended the internal staircase, and noticed a large amount of blood on the staircase.
"Immediately upon arrival on the second level of the premises they've identified the location of two bodies.
"The scene was confronting, [and] has been described as a frenzied attack on the two deceased persons."
Police recovered two "bladed weapons" that they believe were used in the attack.
They confirmed the person who rang triple-0 was the 49-year-old male and the use of a Cantonese interpreter was required at the scene.
Police were not able to hold a conversation with the male and rendered first aid to him, before he was taken into custody and to hospital for medical treatment.
The victims have not yet been formally identified and the relationships of the three people are yet to be fully established, but police believe they are "linked".
Late on Monday afternoon, detectives were seen removing two mobile phones, sealed in plastic bags, from the home.
The scene will remain cordoned off late into the night, with forensic investigators remaining on scene.
Police are seeking information from neighbours and have asked anyone with information to come forward.
'Quiet people'
John, who did not wish to provide his surname, is a neighbour of the property and said the occupants of the home were "quiet people".
"They kept to themselves, if they were going up the street you'd just wave, say hi and that was about it," he said.
He said police doorknocked the street, but he hadn't seen or heard anything until he saw the police cars.
