A property in Westview Terrace, Stornoway has been cordoned off by Police as part of their ongoing investigations.
It is thought this is related to the Aitchison murder inquiry, however a spokesperson said it would be inappropriate to comment on their ongoing investigations.
Two young men appeared on petition at Inverness Sheriff Court on Monday charged with the murder of teenager Liam Aitchison.
No plea or declaration was made by Jonathan Alexander MacKinnon, aged 21, from Stornoway, or by Stefan Norquay Macleod Miller, aged 20, from Carloway.
Both men remain in custody in the Highland capital.