A sex offender who was released from jail in November subject to 50 conditions, despite being considered a serious danger to the community, is being sought by WA police.

They said Patrick Lennard Narrier, 45, was last seen on Tuesday night in Forrestfield and they want to speak with him relation to a current investigation.

According to 7 News Perth Narrier is thought to have tampered with his ankle tracking device and authorities have no idea where he is.

In 1993, Narrier broke into a home and forcibly removed a 12-year-old child while armed with a knife.

He dragged the girl across the road, removed her night gown and punched her in the face. When he was released from jail 5 years later he broke into the homes of two women in one night. He raped one of those women - the other managed to run away.

After serving another 12 years he was released again, this time on a strict supervision order which includes 50 conditions.

Those conditions include taking a maximum anti-libido dosage, undergoing ongoing psychological and substance abuse counselling and wearing a tracking device.

He is described as dark skinned, approximately 180cms tall, with a solid build, black/greying hair, a moustache and short beard, and brown eyes.

Anyone with information regarding his whereabouts is asked to call police immediately on 131 444.