British detectives are reviewing the case to determine if anyone helped the only person convicted of the attack.
The attack on a Pam Am flight over Scotland killed 270 people, including 11 civilians on the ground.
The review began after Abdel Baset al-Megrahi withdrew an appeal against his conviction earlier this year. Detectives have looked at the evidence to try and find new leads in the 1988 bombing.
According to a police statement, British relatives of the victims, were told in an e-mail that officers are considering several potential lines of inquiry.
One of these includes a review of the forensic evidence. Al-Megrahi was freed by Scottish authorities in August on compassionate grounds after he was diagnosed with terminal cancer.
He returned to a hero's welcome in Libya, causing outrage with some victim's families and US officials.
Editor: Zhang Pengfei | Source: CCTV.com