"It is likely that the perpetrators are still at large"

[A long and detailed article headlined The Lockerbie Bombing: The Tragic True Story of Pan Am Flight 103 by Dr Michele Gama Sosa has been published today on the American Grunge.com website. It is well worth reading. The following are the first two and the last two paragraphs:] 

The bombing of Pan Am Flight 103 on December 21, 1988, a mere four days before Christmas, continues to vex intelligence and law enforcement agencies in Europe and the United States. Although Libya and one of its former intelligence agents have been held responsible, the identity of the perpetrators is still far from certain. Politics, corruption, and special interests have dogged the victims' attempts to find justice and closure for the horrific incident that killed 270 people during one of the most joyous times of the year.

Since the day of the bombing, different governments, individuals, and institutions have put forward a host of theories regarding the identity of the perpetrators. The list of the accused and their sponsors ranges from the United States to Iran. This is the true, convoluted, and tragic story of the bombing of Pan Am Flight 103, one of the worst air disasters in aviation history.

...

The Lockerbie case has taken numerous twists and turns. When justice appeared served, it was revealed that special interests and economic expediency had tainted the trials of the suspects. Abdelbaset al-Megrahi's family has continued to fight his conviction posthumously, and on January 15, 2021, Scotland rejected an appeal to vacate al-Megrahi's conviction.

In light of the doubts surrounding al-Megrahi's conviction, it is likely that the perpetrators are still at large. Al-Marimi's indictment has provided a hope that perhaps the perpetrator can still be brought to justice. As time passes, though, many of those involved in the Lockerbie case have died. It is quickly becoming a race against time to find and sentence the perpetrators, if for no other reason than to provide closure to the families of the victims and end their three-decade wait for justice.