Victims' family members and advocates are grieving anew as the only man convicted in the 1988 bombing of Pan Am Flight 103 over Lockerbie, Scotland -- which killed 270 people -- was released Thursday from a British prison.

Abdelbeset Ali Mohmed al Megrahi, 57, sick with advanced prostate cancer, was released on compassionate grounds and sent home to Libya to die, Scottish authorities said. Megrahi, who prosecutors said was a Libyan intelligence agent, was convicted in 2001 of placing a bomb on the Boeing 747.

Libya has formally accepted responsibility for the bombing and has compensated the families, although longtime Libyan leader Moammar Gadhafi denied any culpability in the attack.