SEX Assault Squad detectives have charged a 40-year-old man over an alleged sexual relationship with two teenage girls.
Police claim the man had a sexual relationship with the two 14-year-olds between December 2017 and September 2018.
He also allegedly used social media, multiple mobile phones and fake addresses to avoid detection by police.
Detectives raided a house in Leeming and seized drugs, drug paraphernalia and electronic devices such as a video camera, computers and storage devices.
The 40-year-old man was charged with two counts of sexual penetration of a child between 13 and 16-years-old, two counts of possession of a prohibited drug, having a sexual relationship with a child under 16-years-old, supplying a prohibited drug and possession of drug paraphernalia.
He is due to appear in the Fremantle Magistrates Court today.
The investigation is ongoing and anyone with information should call Crime Stoppers on 1800 333 000 or make a report online.