A 42-year-old woman was arrested after being seen crouching on a window ledge at Block 227 Lorong 8 Toa Payoh on Monday morning (July 29).
Stomp contributor Husain, a resident in the vicinity, said he was leaving for school at around 7am when he noticed a commotion across his block.
A video that he took shows a woman perched on the 16th-floor ledge while she held on to pipe socket holders outside the window.
At least four rescuers can be seen on the roof of the block.
Husain told Stomp: "I first saw a fire engine and two police cars parked below the block.
"When I looked across, the woman was hanging outside the window on a very narrow ledge.
"Thanks to the outstanding bravery of the commandos and the Singapore Civil Defence Force (SCDF) officers, the woman was safely brought inside the house."
Responding to a Stomp query, the police said they were alerted to a case of attempted suicide at the block at 6.40am.
The woman was conscious when taken to Tan Tock Seng Hospital and was subsequently arrested in relation to the case.
Police investigations are ongoing.