Search warrants were executed at two homes in Leeton on Thursday morning by strike force investigators, supported by specialist officers from NSW Police support and enforcement squads.

Strike Force Yatama was established by Griffith-based Murrumbidgee Police District in February, tasked with the ongoing investigations into the mid-state chapter of the OMCG in the region.

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The Thursday morning raids saw two men arrested, with a 48-year-old detained at a Coolamon Street home and a 45-year-old taken into custody from a business on Toorak Road.

According to police, the search at the Coolamon Street premises uncovered a clubhouse full of Bandidos contraband in a shed at the property.

"The clubhouse was dismantled, and police seized a large amount of Bandidos OMCG paraphernalia including clothing, vests, insignia, patches and memorabilia," police said.

"Motorcycles, physical documentation, knives, electronic devices and storage devices were also seized.

"All items will undergo further examination."

Both men were taken to Leeton police station and charged with participating in a criminal group and contributing to criminal activity, and demanding property with menaces with intent to steal.

Police allege the pair are members of the Bandidos, and both were refused bail and scheduled to appear before Griffith Local Court on Friday.

Two more people were arrested later on Thursday, with a 39-year-old man and a 37-year-old woman detained at Narrandera's police station around 6pm.

They are facing the same charges as the two arrested in Leeton, with the man due to appear before Wagga Local Court on Friday after being refused bail.

The woman was granted bail and will appear before Narrandera Local Court on August 19.

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