South Australian father Pawel Klosowski has admitted to the shooting murders of his teenage son and his son's girlfriend in the state's south-east last month.
Klosowski, 46, appeared in the Mount Gambier Magistrates Court on Monday afternoon charged with two counts of murder.
The bodies of his son Lukasz Klosowski and girlfriend Chelsea Ireland — both aged 19 — were discovered at a property at Mount McIntyre, near Millicent.
The young couple, who both lived in Adelaide, were visiting the property when they were allegedly shot dead on Saturday, August 22.
Appearing in court via video link, Klosowski twice pleaded guilty to murder in front of a packed courtroom.
To each count, Klosowski responded: "Guilty your honour."
Klosowski was arrested and charged the day after the teenagers were killed.
Details surrounding his identity were initially suppressed, but that order expired when he first appeared in court, allowing him to be named.
Dozens of tributes have since flowed for the much-loved young victims, who were both in their first year at university.
Lukasz, nicknamed Wu, was a former student of Adelaide's Christian Brothers College and was studying journalism at the University of South Australia.
He was remembered at his funeral as a loving son, brother and friend with an excellent sense of humour.
"I'll never forget him," one mourner said.
"The sense of humour, the quietness. He was a beautiful soul."
Ms Ireland's family and friends also gathered to farewell the "courageous, caring" teenager at a funeral service earlier this month.
Her father Greg told mourners that Chelsea wanted to "change the world".
"I'm not sure if she knew, but it was clear to everyone, she already had," Mr Ireland said.
"She was courageous, caring, generous, kind-hearted, strong and brave.
"She was all of these and so much more."
Pawel Klosowski — who is also known as Paul — has been remanded to appear before the Supreme Court for sentencing on November 2.
