Luke Murrell, one of the directors of major syndicator Australian Bloodstock, is backing in Weir, who trains a large team of about 50-60 of his horses.

Murrell admitted that some of his owners had expressed concerns about Wednesday’s developments, but told The Courier there wouldn’t be any drastic moves.

“For us, I’m happy to see how things play out before getting carried away,” he said.

“All our dealings with Darren have been impeccable and he’s the most honest and always-wants-to-help-you-type person that you’ll ever meet.”

“All our dealings with Darren have been impeccable”: Listen to Mr Murrell talk about Darren Weir here.

Police confirmed they're investigating the use of electronic shock devices known as “jiggers” following the arrest of the Melbourne Cup-winning trainer and two other men.

Victoria Police said it seized a number of illegal items, including cocaine, an unregistered firearm and the “jiggers” as part of the early morning raid on Weir’s stables in Miners Rest and Warrnambool.

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The Courier was part of a large gathering of media that flocked to Weir’s Miners Rest base as police looked for evidence. Plain-clothed officers were seen inspecting the stables, including detailed searches of vehicles on the premises.

Murrell said Weir would be “the last person you’d suspect anything of”.

“So as far as the horse jiggers and that – I don’t think Darren would be silly enough that they would be his,” Murrell said.

“When you’ve got so many people that work for you, there’s bound to be one or two that probably aren’t as happy as they should be. It’s pretty easy to have a disgruntled staff member.

“Until you know all of the facts, I think it’s pretty ordinary all these people jumping up and down and wanting to label him. He’s the most successful trainer in Australia and everyone wants to now call him a cheat because of it. I think that’s just rubbish.”

Australian Bloodstock has enjoyed plenty of success, with some of its group 1 triumphs coming with Weir-trained horses such as Brave Smash and Tosen Stardom.

The syndicator’s biggest achievement was winning the 2014 Melbourne Cup with Protectionist, which was trained by Andreas Wöhler.

Australian Bloodstock’s next runner with Weir is Calibration, which is accepted for a race at Caulfield on Saturday. The horse is to run in the Ladbrokes Handicap (2000m) for jockey Craig Williams.