Two tradies working on a construction site were trapped beneath falling scaffolding on April. 1.
The incident occurred at Macquarie Park in north-west Sydney.
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Fire and Rescue NSW confirmed an incident was unfolding on Twitter.
'FRNSW crews are assisting @NSWAmbulance with a delicate rescue operation at a construction site in Epping Rd. Two people are trapped under a large amount of fallen scaffolding.'
NSW Police also issued a statement: 'Emergency services were called to Epping Road about 12.20pm after scaffolding collapsed on workers.
'It's believed two workers are trapped; however, crews have not yet been able to access them, and their conditions aren't known.
'As the operation is continuing, members of the public are urged to avoid the area.'