格雷格·德拉尼于1989年7月12日从澳大利亚维多利亚州吉隆市惠廷顿郊区（现称圣奥尔班斯公园）的家中失踪，当时年仅21岁[1]。时隔34年，其家人在国家失踪人口周期间（8月2-8日）重新发起呼吁，希望能获得突破性线索[1]。
失踪时格雷格身穿蓝色牛仔裤、白色阿迪达斯运动鞋和黑白相间的毛衣，身高165厘米，中等身材，棕色头发、蓝色眼睛、肤色较浅[1]。澳大利亚联邦警察发布了格雷格今年58岁的推测图像[1]。格雷格的母亲帕梅拉表示："找到一根手指，找到某样我能证明是格雷格的东西，这样我就能埋葬它，然后说'晚安，再见'"[1]。
警官马克·伍德海德表示："这项调查仍然开放，如果任何人拥有任何信息，无论多么微小，现在正是站出来的时候"[1]。该案件至今仍处于开放状态[1]。
Greg Delaney vanished from his home in the Whittington suburb of Geelong, Victoria on July 12, 1989, at the age of 21.[1] Now 58 years old by current estimate, Delaney remains missing, prompting his family to launch a fresh appeal during National Missing Persons Week in early August.[1] The Australian Federal Police released an age-progressed image depicting what Delaney might look like today as part of the renewed effort to generate leads.[1]
At the time of his disappearance, Delaney was wearing blue jeans, white Adidas sneakers, and a black and white sweater.[1] He stood approximately 165 centimeters tall with a medium build, brown hair, blue eyes, and fair complexion.[1] His mother, Pamela, expressed the family's desperate hope, stating: "Find me a finger, something that I can prove is Greg, and I can bury it and say, 'goodnight, goodbye.'"[1] Detective Mark Woodhead emphasized that the investigation remains active, urging anyone with information to come forward: "This investigation remains open so if anyone has any information, no matter how small, now is the time to come forward."[1]