This weekend's Vegas venture couldn't have gone worse for the Warriors, as the NRL looks to launch an assault investigation into assistant coach Richard Agar.

According to new reports, Agar allegedly grabbed a British journalist by the throat - and also reportedly verbally abused him in the press box in Allegiant Stadium.

Coaching expert Wayne Goldsmith says it's expected this investigation will be followed on properly, rather than just falling back to the court of public opinion. 

"I'm sure they're a very professional organisation and I'm sure that they're doing all of those things really well. And the important thing is to make sure this is played out correctly, properly and in time - it's easy to hang people in the court of public opinion." 

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