Homicide detectives are searching bushland in Perth’s southern suburbs this morning as part of a missing person investigation.

Forensic investigators are searching in Ashendon, near Armadale, about 200m off Albany Highway in the Jarrahdale State Forest.

It is understood the homicide squad have been investigating the disappearance for about a week but is not clear how long the person has been missing.

Camera Icon The scene this morning. Credit: 7 News

Police will not say if it is a man or a woman who is missing. A man is helping detectives with their investigation.

Officers have closed off the area from Albany Highway to Curtis Road and out to Springfield Road.

Camera Icon Police are searching bushland at the Jarrahdale State Forrest. Credit: Nic Ellis/The West Australian

More to come.