Cyber Crime Unit Exposes Pre-Recorded Livestream in Murder Case
Stephen McCullagh appeared to have crafted the perfect alibi for the night his pregnant girlfriend, Natalie McNally, was brutally murdered. While the 32-year-old victim was attacked at her home in Silverwood Green, Lurgan, between 8:50 PM and 9:30 PM on Sunday, December 18, 2022, McCullagh seemed to be almost 20 miles away at his Lisburn residence, livestreaming himself playing computer games and drinking alcohol.
The Virtual Alibi That Seemed Foolproof
Known online as votesaxon07, McCullagh advertised a surprise livestream titled "The Violent Night Christmas Live Gaming Stream," scheduled to start at 6 PM on December 18. The six-hour footage, shown during his trial at Belfast Crown Court, opened with him wearing a Santa hat and discussing the challenges of live broadcasting. He mentioned technical issues preventing him from responding to live chat, telling viewers to "chat amongst themselves," and stated he would not use his phone.
As he poured a Guinness and introduced Grand Theft Auto as a childhood favorite, McCullagh joked about drinking and driving in the game, but clarified, "In the game by the way, I’m not leaving the house tonight." He mused about Christmas time off work and expressed excitement about spending time with loved ones, adding, "It’ll be a really f****** good Christmas this year."
Behavior During the Stream Raised Questions
The stream continued with McCullagh claiming he hadn't had a drink in months before consuming large portions of alcohol, including Baileys. He described himself as a "very angry gamer" and appeared increasingly drunk, screaming "die, why won’t you die" at a character during a violent game segment. He referred to himself as "pissed out of his tits" and admitted, "I realised I’m a very angry drunk," but added, "In real life, I’m an absolute sweetheart. I don’t have too many loved ones in my life, but the ones I love, I love with all my heart."
This virtual alibi, seemingly designed to be beyond the comprehension of most, placed McCullagh at home during the critical time frame of McNally's murder. However, it was meticulously dismantled by experts from the Police Service of Northern Ireland's cyber crime unit.
How the Alibi Was Debunked by Cyber Experts
The trial revealed that an extensive examination of McCullagh's devices provided compelling evidence indicating the livestream had been pre-recorded on December 14 and saved as a video file. After his re-arrest in January, McCullagh admitted in a pre-prepared statement to police that he had indeed pre-recorded the footage.
In his statement, he claimed he had been consuming alcohol on the night of Ms. McNally's killing and had been asleep for most of the evening. This admission, coupled with the digital forensic evidence, exposed the livestream as a carefully constructed deception aimed at establishing an alibi for the murder.
The case highlights the increasing role of cyber crime expertise in modern criminal investigations, where digital alibis can be scrutinized and unraveled through technical analysis. McCullagh's attempt to use the virtual world of gaming as a shield ultimately failed under the scrutiny of specialized police units, demonstrating that even seemingly perfect digital defenses are vulnerable to forensic examination.
