WA police confirm bikie links in 'cold-blooded' fatal shooting in northern Perth suburb of Gnangara (BUTTON) Share -- WA police confirm bikie links in 'cold-blooded' fatal shooting in northern Perth suburb of Gnangara -- WA police have vowed to crack down on criminal gangs following a fatal shooting in the northern Perth suburb of Gnangara yesterday, with detectives confirming the victim had links to bikie members.