<div class="block-content"><div class="styles__Container-sc-1ylecsg-0 goULFa"><span>It's a </span><a href="https://www.9news.com.au/cold-case" rel="" target="" title="cold case"><span>cold case</span></a><span> that has been brought back into the spotlight.</span></div></div><div class="block-content"><div class="styles__Container-sc-1ylecsg-0 goULFa"><a href="https://www.9news.com.au/south-australia" rel="" target="" title="South Australia"><span>South Australia</span></a><span>'s major crime detectives are re-visiting the murder of Rosemary Brown and her daughter Melissa Trussell in 2000.</span></div></div><div class="block-content"><div class="styles__Container-sc-1ylecsg-0 goULFa"><span>Tonight, a former police diver exclusively told 9News of his role in the investigation, while supporting this fresh search for answers.</span></div></div><div><div id="adspot-mobile-medium"></div></div><div class="block-content"><div class="styles__Container-sc-1ylecsg-0 goULFa"><strong><span>READ MORE:</span></strong><span> </span><a href="https://www.9news.com.au/national/brisbane-man-and-woman-hurt-in-shooting-during-home-invasion/8fc05a9b-59b8-4f2b-bab5-6cabc70638d8"><strong><span>Man and woman hurt in shooting during attempted home invasion in Brisbane</span></strong></a></div></div><div class="block-content"><div class="styles__Container-sc-1ylecsg-0 goULFa"><span>Peter Menz spent over three decades below the surface, helping solve some of the state's biggest murder cases.</span></div></div><div class="block-content"><div class="styles__Container-sc-1ylecsg-0 goULFa"><span>But, it's this unsolved one from 25 years ago at Garden Island that he'll never forget.</span></div></div><div class="block-content"><div class="styles__Container-sc-1ylecsg-0 goULFa"><span>"It was a request from Port Vixen 10, to assist with a body badly decomposed, female," Menz recalled.</span></div></div><div><div class="OUTBRAIN" data-reactroot="" data-src="//www.9news.com.au/national/garden-island-cold-case-revisited-mother-daughter-rosemary-brown-melissa-trussell/193a7138-0066-4a9e-87be-9672eac7d28a" data-widget-id="AR_5"></div></div><div class="block-content"><div class="styles__Container-sc-1ylecsg-0 goULFa"><span>The retired police diver was among those first on scene and tasked with retrieving the body of Brown from the Mangroves in 2000.</span></div></div><div class="block-content"><div class="styles__Container-sc-1ylecsg-0 goULFa"><span>The mother and her 15-year-old daughter, Trussell, had been missing for weeks.</span></div></div><div class="block-content"><div class="styles__Container-sc-1ylecsg-0 goULFa"><span>"We went in there and there was other police officers there as well, forensics and... crime scene, I should say," he said.</span></div></div><div class="block-content"><div class="styles__Container-sc-1ylecsg-0 goULFa"><strong><span>READ MORE:</span></strong><span> </span><a href="https://www.9news.com.au/national/sydney-mays-hill-stabbing-man-fighting-for-life/e13a92d4-d5c2-494e-bb2b-b1bd310993e3"><strong><span>Man fighting for life after stabbing at Airbnb in Sydney's west</span></strong></a><strong><span></span></strong></div></div><div class="block-content"><div class="styles__Container-sc-1ylecsg-0 goULFa"><span>A crime scene was immediately set up, with Menz hoping they'd locate the missing teenager too but she has never been found.</span></div></div><div class="block-content"><div class="styles__Container-sc-1ylecsg-0 goULFa"><span>"We were there for a while, we had a bit of look around but because it was dark we couldn't do a proper search that night because of the lighting," he recalled.</span></div></div><div class="block-content"><div class="styles__Container-sc-1ylecsg-0 goULFa"><span>In the past month, major crime detectives have re-visited the cold case and conducted a number of searches around Garden Island.</span></div></div><div class="block-content"><div class="styles__Container-sc-1ylecsg-0 goULFa"><span>Authorities are hoping to finally find Trussell's remains and those responsible for the murder of the mother and daughter.</span></div></div><div class="block-content"><div class="styles__Container-sc-1ylecsg-0 goULFa"><span>Menz said at the time they carried out a thorough search at Garden Island but 25 years on, technology and tactics have changed and he welcomes the recent searches.</span></div></div><div class="block-content"><div class="styles__Container-sc-1ylecsg-0 goULFa"><span>"I think it's very good, because we would all like to see closure, for the family especially," he said.</span></div></div><div class="block-content"><div class="styles__Container-sc-1ylecsg-0 goULFa"><span>He's now waiting, along with many others, for a breakthrough.</span></div></div><div class="block-content"><div class="styles__Container-sc-1ylecsg-0 goULFa"><span>"Obviously they have got some good information and hopefully this case will be solved."</span></div></div><div class="block-content"><div class="styles__Container-sc-1ylecsg-0 goULFa"><a href="https://www.9news.com.au/national/how-to-follow-9news-digital/29855bb1-ad3d-4c38-bc25-3cb52af1216f" target="_blank"><strong><em><span>DOWNLOAD THE 9NEWS APP</span></em></strong></a><strong><em><span>:</span></em></strong><span> </span><em><strong><span>Stay across all the latest in breaking news, sport, politics and the weather via our news app and get notifications sent straight to your smartphone. 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