Perched on the second-storey ledge of a building in Kuala Lumpur, she wrote a message in blood, seemingly a cry for help.
The woman is believed to be from mainland China and is said to have escaped from an illegal brothel in the same building, reported Malaysia's Guang Ming Daily.
She was rescued by firemen.
Witnesses said they saw the woman climbing out of a second-storey window at about 7am on Saturday.
Standing precariously on the ledge, she shouted for help.
The woman, who is believed to be in her 30s, slashed her wrists with a craft knife and used her blood to write a telephone number on the building's walls.
Speaking in Mandarin, she told the gathered crowd that the telephone number belonged to a man who had brought her into the flesh trade in Malaysia, and that she had been smuggled into the country by human traffickers.
Emergency responders arrived at about 11.20am and rescued her.
Police say the woman has been taken to Hospital Kuala Lumpur for treatment.
At the scene, two men, both in their 30s, were arrested and are assisting police with investigations.
This article was published on Sept 1 in The New Paper.
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