Skeletal remains found at the construction site of the new WA Museum are human, police have confirmed.
The bones were found on Wednesday and were assessed at the scene before being taken away for further testing.
The discovery brought construction at the Northbridge site to a halt.
WA Police Commissioner Karl O'Callaghan said forensic investigators were working to find out more about the bones.
"The process would obviously be an identifying process which there'd be DNA but we don't know how old those remains are," he said.
"They'd have to be analysed and we'd get some advice about that as to whether it's very old or something more recent but I wouldn't imagine they'd be very recent given the area they were found."
"If they [the bones] are hundreds and hundreds of years old there's not likely to be much of a police investigation, if they're much more recent than that then we would have to look into it — either as a homicide case or as an unexplained case."
