Detectives in Scotland are re-examining evidence in the Lockerbie airline bombing in 1988 in which 270 people were killed.
The only person to be convicted of the bombing, former Libyan intelligence officer Abdel Basset al-Megrahi was freed on compassionate grounds in August as he was suffering from inoperable cancer.
The Crown Office, which carries out Scotland's prosecutions, says the case against Megrahi is not being reopened.
However, police in the Dumfries and Galloway force which handled the original inquiry are reviewing the case now that Megrahi has abandoned his appeal against conviction.
Victims' relatives welcomed the move but renewed calls for a public inquiry, the BBC says.