Police established a crime scene following a fire at an apartment complex in Macquarie Fields.
About 5pm (Wednesday 22 November 2017), emergency services were called to a unit in Saywell Road after neighbours reported smoke coming from inside the property.
The single occupant, a 46-year-old man, was taken to Liverpool Hospital in a serious condition.
No one else was injured.
Police from Macquarie Fields Local Area Command have commenced an investigation.
At this stage, the fire is not believed to be suspicious.
Police are urging anyone with information in relation to this incident to call Crime Stoppers on 1800 333 000 or use the Crime Stoppers online reporting page: https://nsw.crimestoppers.com.au/
Information you provide will be treated in the strictest of confidence. We remind people they should not report crime information via social media pages.
Source: NSW Police