The young American chief executive found dead at an apartment block here had a piece of paper stained with cocaine in her back pocket and was on anti-depressants.
She was extremely stressed over work and personal issues, and had been looking into how to commit suicide just days before her death.
There was no foul play in the death of Ms Autumn Radtke, 28, who died of multiple injuries, the courts found yesterday.
"It is apparent that Ms Radtke was determined to end her life and had made concerted efforts towards facilitating this outcome," said State Coroner Janet Wang.
Ms Radtke, a former Silicon Valley whiz-kid, had moved to Singapore in December 2011 to be the chief executive of First Meta, a locally based virtual currency-exchange platform.
But her company didn't take off as expected.
Before her death, she had confided in her friends, co-workers and business associates on how she was stressed over money matters, and even told some of them that she had thoughts of killing herself.
Not her usual sunny self, she had lost weight, and seemed depressed and anxious.
Ms Radtke's boyfriend, Daniel Pohlod, a 30-year-old Australian, was the last person to see her alive.
Around Valentine's Day, she told him that she was moving in with him as her company was running out of cash and she needed to cut costs, he told investigators.
He had never seen her taking drugs, but had asked her if she was when her behaviour changed. She said no.
Although cocaine traces had been found on her, it was inconclusive whether she had taken controlled drugs before she died, the court said. According to the investigation officer, no cocaine was detected in her urine sample.
Ms Radtke's body was discovered by a cleaning supervisor on the second floor parapet of Block 8 Cantonment Close at about 7am on Feb 26.
Closed-circuit TV footage from three cameras in the area showed her visiting the Housing Board block alone three times, 12 hours before her death.
The coroner noted that professional counselling and psychiatric treatment could have prevented her suicide.
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