Queensland police have arrested a third man over the alleged murder of Levi Johnson, who was fatally stabbed outside a gym in Brisbane's south.
Mr Johnson, 23, was stabbed multiple times after his car was allegedly cut off in the driveway of a Mansfield gym on Monday.
Thomas Myler, 35, was arrested by police on Friday night for the alleged murder.
He was charged with one count of murder and the matter was mentioned in Brisbane Magistrates Court this morning.
It comes after Stuart Galloway and Luke Thomas Moore, 34, faced court earlier this week, each charged with Mr Johnson's murder.
Police and the dog squad found Mr Myler at a Wellington Point house on Brisbane's bayside.
The house was declared a crime scene.
A fourth man, 24-year-old Kyle Martin, is still wanted by police for questioning over the attack and remains on the run.
An arrest warrant for both men was issued on Friday.
Detective Superintendent Andrew Massingham said Mr Myler was armed at the time of his arrest.
"There was a fully loaded firearm within the residence. He left that in the residence when he surrendered to police," he said.
Mr Myler's girlfriend was also taken into custody after the police stand-off at the Wellington Point house.
"The female at this stage is still being questioned and a determination will be made after whether there are any charges pending with respect to her aiding [Mr Myler] from avoiding police custody over the last few days," he said.
Superintendent Massingham said that, before the couple was arrested, polair had tracked Mr Myler and his girlfriend to a Chandler property where it was believe they buried firearms in the backyard.
"That address is currently the subject of a search by specialist police, and we should have the results of that search sometime soon," he said.
"We'll also be conducting an investigation in relation to any other occupants of this residence that may have aided the wanted person [Mr Myler] avoid detection this week," he said.
Superintendent Massingham said anyone charged with accessory after the fact would face a lifetime prison sentence.
"We would like, once again, to thank the members of the public that have provided ongoing information this week," he said.
