WA man, teen accused of child sex assault

A man and a teenage boy have been charged with sexually assaulting a young girl in Western Australia.

The man, 36, and boy, 16, allegedly assaulted the girl, eight-years-old at the time of the first incident, between 2013 and 2015.

The man will appear in Midland Magistrates Court on Tuesday charged with knowingly sexually penetrating a child.

The teen will face Perth Children's Court on August 4 charged with the sexual penetration of a child under the age of 13.