A suburban Sydney street was sent into chaos after a man doused himself in petrol and reportedly 'set himself alight'.

Authorities rushed to a unit block in Wiley Park in Sydney's south-west on Monday afternoon after concerned locals reported him to police.

The street was packed full of emergency vehicles, with unconfirmed reports the man set himself alight on the balcony of his home.

A suburban Sydney street was sent into chaos after a man doused himself in petrol and 'set himself alight'

Authorities rushed to a unit block in Wiley Park in Sydney's south-west on Monday afternoon after concerned locals reported him to police