Fourth Suspect Charged in Ongoing Homicide Investigation into Death of Billy Watson

ARMADALE, Scotland — A fourth suspect has been formally charged in connection with the fatal incident involving 35-year-old William "Billy" Watson. Police Scotland officers and emergency services were dispatched to a residential property on Harestanes Road in Armadale at approximately 11:50 a.m. on Saturday, September 12, 2026, following reports of an injured male. First responders arrived on scene, where Watson was pronounced deceased. A subsequent post-mortem examination confirmed that Watson sustained fatal injuries, prompting Major Investigation Team detectives to launch a murder inquiry.

Official Status and Legal Proceedings

Police Scotland confirmed that a 20-year-old man was arrested on Tuesday, September 22, 2026, marking the fourth suspect charged in connection with Watson's death. The accused was remanded in custody and scheduled to appear before Livingston Sheriff Court on Wednesday, September 23, 2026. He joins three co-defendants—aged 57, 44, and 29—who were previously arrested and appeared at Livingston Sheriff Court on September 18 and 21 on charges including murder and attempting to defeat the ends of justice. Forensic officers continue to analyze two vehicles—a blue BMW and a black Vauxhall Mokka—recovered near the scene as part of ongoing investigative proceedings.

Community Impact and Tributes

News of Watson’s death has deeply affected the Armadale and West Lothian communities. In a statement released through Police Scotland, Watson's family remembered him as a charismatic and devoted father to his three daughters—Tiana, Laicie, and Charlee-Ann—as well as a beloved son, brother, and uncle. A community memorial and balloon release event has been organized by family members for Sunday, September 27, 2026, at Watson Park in Armadale.