Libya: New evidence of atrocities by Gaddafi's forces

In Libya, there is new evidence of atrocities carried out by Colonel Gaddafi's forces in their final days of power.

Human Rights Watch says it has uncovered dozens of arbitrary executions of civilians.

Just outside Tripoli, the BBC has filmed the aftermath of an apparent massacre at a military base with testimony from men who escaped.

Orla Guerin's report contains graphic and distressing images.