Forces loyal to Muammar Gaddafi are resisting an advance by Libyan rebels towards the embattled Libyan leader's hometown of Sirte in the fiercest clashes since the start of a sweeping offensive that has brought a string of coastal towns under opposition control.
The rebels, backed by international coalition air strikes, have advanced largely unchecked since Friday but claims in Benghazi, the rebel's eastern stronghold, earlier on Monday that Sirte had also fallen were premature.
Opposition fighters are now engaged in clashes about 100km east of the city, with pro-Gaddafi forces shelling their front lines.
Fighting is ongoing at Nawfaliya, about 180km east of Sirte, where opposition forces say they have come upon a heavily mined road. Pro-Gaddafi forces have dug into positions near the front line, and are shelling opposition fighters.
"Sirte will not be easy to take. Now, because of NATO strikes on [the government's] heavy weapons, we're almost fighting with the same weapons," said General Hamdi Hassi, an opposition commander from the city of Bin Jawad.
There was fresh fighting further west in rebel-held Misurata as well, where rebels admitted that Gaddafi forces had gained control of part of the town after days of heavy fighting and despite air strikes on Saturday by French and British forces.
"Part of the city is under rebel control and the other part is under the control of forces loyal to Gaddafi," a spokesman told the Reuters news agency.
Nine people were killed overnight by snipers and shelling by pro-Gaddafi forces, according to a doctor there, while a resident told Reuters that 24 people had been wounded in mortar attacks by government forces.
A Libyan government spokesman claimed Misurata had been liberated.
Stretched lines
Al Jazeera's James Bays has been following the rebel offensive, which has seen them claim the towns of Ajdabiya, Brega, Ras Lanuf and Bin Jawad.
Speaking from Bin Jawad, Bays said it was uncertain where the frontline was. People coming along the coastal road from Sirte said Gaddafi forces were gathered around 60 km outside the city, positioned in trees, our correspondent said.
The speed of the rebel advance has stretched lines of communications and created logistical problems, said Bays. One problem is a lack of electricity, which means that petrol pumps don't work.
"At petrol stations they're using plastic bottles on strings down into the tank below the station to pull up fuel," said Bays.
The rebels' advance along the coast has triggered exuberant celebrations in towns along the route such as Ajdabiya with rebel fighters firing their weapons in celebration.
But government forces appear to have been withdrawing their heavy armour, rather than engaging with the rebels.
There were reports on Sunday of a column of military vehicles including truck-mounted anti-aircraft guns seen leaving Sirte in the direction of Tripoli, accompanied by dozens of civilian cars carrying families, according to a Reuters reporter in the vicinity.
The opposition's National Council has said it expects a major battle to occur in the area around Tripoli, as opposed to at Sirte.
NATO command
Meanwhile, international air strikes continue on Monday with British Tornado aircraft attacking and destroying Libyan government ammunition bunkers in the Sabha area of the southern desert, the British defence ministry said.
"Storm Shadow missiles were launched against ammunition bunkers used to re-supply Libyan government troops attacking civilians in the north of the country, including Misurata," it said in a statement.
NATO on Sunday assumed full command of coalition air operations in Libya.
"We have directed NATO's top operational commander to begin executing this operation with immediate effect," Anders Fogh Rasmussen, NATO's secretary general, said in a statement
"Our goal is to protect civilians and civilian-populated areas under threat from the Gaddafi regime."
The operations will be led by Canadian General Charles Bouchard, NATO said.
Speaking to Al Jazeera, Rasmussen said that NATO was "impartial" and not picking sides, and that its mandate was only to prevent violence against civilians.
Rasmussen said that NATO's taking authority over the military intervention would provide "unity of command". He also confirmed that several non-NATO countries would be contributing to the military effort, but said he would leave announcements up to individual governments.
James Spencer, a Middle East and North Africa defence analyst, told Al Jazeera that removing Gaddafi from power was "not within NATO's purview".
"If you listen very carefully, the Secretary-General of NATO has been very clear. [Intervention] is to protect civilians against Gaddafi attacks," he said.
Source:
Al Jazeera and agencies