Armadale Detectives are seeking information regarding the whereabouts of 32-year-old Bikramjit Singh, who was last seen in Cannington around 6am on Monday June 25.
Mr Bikramjit Singh is described as approximately 180cm tall, with a medium build, very short dark hair, an unshaven face and light brown skin.
Police believe that Mr Bikramjit Singh may be able to assist them with a current investigation.
It is believed Mr Bikramjit Singh may have travelled to South Australia or Victoria.
Any members of the public who see Mr Bikramjit Singh are advised not to approach him and are asked to call Police immediately on 131 444.