Families of the 270 victims of the 1988 Lockerbie bombing are facing further delay in their long quest for justice following the postponement of a U.S. trial. The trial of Abu Agila Masud, a former Libyan intelligence operative accused of building the bomb that destroyed Pan Am Flight 103, was delayed after previously undisclosed evidence came to light.

The bomb exploded on December 21, 1988, killing all 259 people aboard the flight and 11 others on the ground in Lockerbie, Scotland. Masud is alleged to have constructed the explosive device and is reported to have confessed in a 2012 interrogation in Libya to assembling the bomb and working in coordination with Abdelbaset Al-Megrahi and Lamin Khalifah Fhimah. Al-Megrahi was convicted in 2001 for his role in the attack, while Fhimah was acquitted.

The upcoming trial has the potential to provide further details into alternative theories that have circulated over the years, including assertions that Iran commissioned a Palestinian militant group to carry out the bombing. These claims have added complexity to the case, which remains one of the most significant terrorist attacks on U.S. aviation.

The additional delay is a setback for the victims’ families, many of whom are now elderly, who have waited decades for clarity and closure. The postponement underscores the ongoing challenges in resolving one of the longest-running and most contentious investigations linked to international terrorism. Authorities have not disclosed specifics about the new evidence that led to the trial’s suspension. Meanwhile, families continue to await developments with a mix of hope and frustration as the case proceeds through the U.S. justice system.