Several of the revolutionary forces lost their lives during the battle for Amreeya; rocket shells from Gaddafi loyalists hindered their advance into the coastal city of Sirte and Gaddafi’s birthplace.
The developments come as the fighters have reportedly taken full control of the town of Herawa, 60 kilometers to the east of Sirte.
Although the fighters say they have made significant progress in their efforts to capture Gaddafi’s bastions, they have also faced strong resistance in the town of Bani Walid, where many Gaddafi’s men are holed up.
Gaddafi spokesman Moussa Ibrahim said late on Friday that there would be a long war over the two Gaddafi strongholds, despite NATO airstrikes.
He told a Syrian TV network that 17 foreign nationals were arrested in Bani Waid, two of them English, describing them as mercenaries.
Libya has been the scene of intense fighting between government troops and revolutionary fighters since a movement seeking to topple Gaddafi began in mid-February.