Police in Northern Ireland say a man is arrested in connection with the 1973 murder of Marian Beattie. The case concerns the killing of Beattie, who was 18 at the time. Reports say her body was found at the bottom of a quarry after she attended a charity dance. Several outlets describe the arrest as being linked to the long-unsolved death and note it follows an investigation that has resurfaced the matter decades later. The available coverage focuses on the identification of the incident and the arrest, but does not provide additional details such as the suspect’s name, age, or the specific charge at the time of reporting. Nor do the reports include information about evidence presented, court appearances, or the broader investigative context beyond the police statement that an arrest has been made. The story remains at an early stage in the news coverage, with the emphasis on confirming the arrest and recalling the circumstances of Beattie’s death.