After popular movements overturned the rulers of Tunisia and Egypt, Libya's immediate neighbours to the west and east, Libya experienced a full-scale uprising beginning in February 2011. By 20 February, the unrest had spread to Tripoli. Much of Libya had slipped out of Gaddafi's control, falling to anti-Gaddafi forces. Eastern Libya, centered around the second largest city and vital port of Benghazi, was firmly under the control of the opposition. The opposition began to organise themselves into a functioning government. Anti-Gaddafi forces marched on Sirte (Gaddafi's hometown) on 28 September 2011. Gaddafi loyalists delayed the attack with the use of their snipers. The fight for Sirte ended on 20 October with the capture of the town and the death of Colonel Gaddafi.