Investigators rely on doorbell camera footage to understand the moments before and after a fatal assault on an Irish postman involving a golf club, according to separate reports. Both outlets state that the video is treated as a key source of evidence for establishing what happened, including the timing of events around the incident. The footage is described as potentially showing relevant activity immediately preceding the attack and actions occurring directly after the postman was assaulted. The reports indicate that authorities are using the camera evidence alongside other investigative steps to piece together the circumstances of the killing. While the articles focus on the importance of the doorbell footage, they do not present a unified account of the suspect’s identity or detailed motive in the provided text. Overall, the coverage centers on the evidential value of the recordings in reconstructing the lead-up to the attack and the immediate aftermath, which may assist investigators in identifying events and determining how the incident unfolded.