Libya crackdown 'escalates' with thousands feared dead

Reports from Libya indicate thousands may have been killed or injured as the government crackdown escalates "alarmingly", UN human rights head Navi Pillay has said.

For the past week, fighting has raged between anti-government forces and troops loyal to Libyan leader Col Muammar Gaddafi, in power for 42 years.

The BBC's Humphrey Hawsley looks at some of the recent amateur video that puroprts to show clashes between protesters and Gaddafi's forces.