A US Marine boasted about being a “trained killer” in the minutes before he was allegedly knocked unconscious by a Darwin bouncer last year, a court has heard.

On Tuesday, venue manager Matthew Hutcheon told jurors in Summers’ trial he had told police on the night that “Hayden slapped the shit out of him” following “multiple threats of physical harm”.

In an incident report annexed to Mr Hutcheon’s police statement, the court heard he also noted Thomason was “threatening his military training and ability to kill”.

“I believe he uttered that he could kill and that he was a trained killer,” he told Crown prosecutor Ian Rowbottom.

the situation went for multiple minutes, there were multiple threats of physical violence