Police intercepted a text message sent by one of the accused shooters, Lihai Vimahi, 22, suggesting senior Comanchero figures had frozen him out of the club, or "church", for ill-discipline.

"Iv got a month suspension from church lol," Vimahi texted his then girlfriend.

"They rekn iv ben bringing to much heat, n tha I'm too loose, n don't listen?"

The Comancheros are believed to have arrived in the ACT last year, setting up in Canberra's south and challenging the status of the Rebels as the sole outlaw motorcycle gang.

Police believe tensions between the two clubs have simmered since, and flared with a number of drive-by shootings earlier this year.

One of those shootings was allegedly committed by Vimahi, who is currently before the ACT Supreme Court awaiting trial. He allegedly shot a Rebels bikie who was sitting on his porch outside his Stirling home on March 12. Vimahi has pleaded not guilty.

Court documents, tendered when Vimahi was committed for trial last month, allege the shooting saw Adam Cranfield, who was in and out of the Rebels, wounded in the arm and leg.

When police arrived at the scene, Cranfield had crawled back inside and was lying in a pool of blood.

The second Comanchero suspect in the shooting, Daniel Grech, 26, is behind bars in Adelaide, according to court documents.

His calls from the remand centre in Adelaide were monitored, and he spoke of going to war with the Rebels, making the Rebels "dance" when he gets out, and tattooing the word "dog" on one of their heads.

Vimahi was monitored via a phone tap and surveillance device in the wake of the shooting.

The surveillance revealed that Vimahi was also speaking of war with the Rebels and talked of being "tooled up", a reference to being armed.

Police raided his girlfriend's home in April, and left a voicemail on her phone when they arrived to advise her of their presence.

They then listened as she and Vimahi called each other, and talked about a "thing" that was in her home that she did not want to get in trouble for.

"The defendant then constructs a version of events for [his girlfriend] to give police, saying that there was a party at the house on the weekend," police allege in court documents.

Once inside, police found a sawn-off shotgun in a rolled-up swag in the garage. They allege that gun was used by Vimahi in the drive-by.

But the court documents appear to suggest Vimahi's actions were not approved by senior Comancheros.

He texted his girlfriend in late April saying:

"they think I'v ebeen running a muck n that I got ur house raided, I told em yeah n u gots nufing to do with it, but u the one backing my play with the D'z [detectives]."

Soon after, he told her he had been suspended from the club for a month.

Vimahi was arrested in early August and charged with intentionally inflicting grievous bodily harm. He remains in the Alexander Maconochie Centre.