A 30m exclusion zone around a private Rockhampton property has been lifted as a scientific officer and firefighters assess a chemical spill.
A Queensland Fire Department spokesman said someone accidentally spilled 150ml of mercury but it had not spilled on to anyone.
The chemical might have belonged to a person previously living at the home on Elphinstone St in Koongal.
Emergency services were called about 10.30am on Monday, November 17, and they evacuated the house and neighbouring homes in a 30m radius.
A pharmacist was called to the property with paramedics and police, who were doorknocking neighbours, to advise them about the exclusion zone.
The exclusion zone was lifted at 2pm.
A Queensland Ambulance Service spokesperson said no injuries had been reported.