Murders of Tay Chow Lyang and Tony Tan Poh Chuan

On 15 September 2003, two Singaporean students and flatmates Tay Chow Lyang (郑潮亮) (b. 1977–d. 15 September 2003) and Tony Tan Poh Chuan (陈宝川) (b. 3 December 1976–d. 15 September 2003), were found brutally murdered in their flat in Sydney. The boys' fellow classmate and friend Ram Puneet Tiwary (born 1979), also a Singaporean, was accused of these two violent murders. The case, dubbed the "Sydney double murders" in media, made headlines in both Singapore and Australia.

Three years after the murders, Tiwary was convicted for the murders of Tan and Tay, and received a sentence of life without parole for the murders. After filing an appeal, a re-trial was ordered and conducted in 2009 for Tiwary, who was once again found guilty in the second trial and received a sentence of 48 years' imprisonment. After the higher courts of Australia reviewed the case, Tiwary was finally acquitted upon his second appeal and freed nine years after the murders. The murders remain unsolved and no new suspects have been identified.