Libyans stand at a house, damaged by coalition air strikes according to the Libyan government, in Tripoli June 19, 2011. [Photo/Agencies]

TRIPOLI, Libya - The Libyan government said at least four civilians were killed Sunday in a NATO airstrike that hit a residential neighborhood in the capital, adding to charges that the alliance is striking nonmilitary targets.

Journalists based in the Libyan capital were taken by government officials to a neighborhood where rescue efforts were under way at a destroyed building that appeared to have been partially under construction.

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Government spokesman Moussa Ibrahim said the damage was caused by NATO rockets and bombs. He wasn't immediately able to provide the number of casualties, but said there were no military facilities anywhere near the damaged building.

"There was intentional and deliberate targeting of the civilian houses," said deputy foreign minister Khaled Kaim during a visit to the site shortly after reporters arrived. "This is another sign of the brutality of the West."

NATO, which has a mandate to protect Libyan civilians, rejects allegations it targets civilians.

"We are conducting operations with utmost care and precision to avoid civilian casualties. Civilian casualties figures mentioned by the Libyan regime are pure propaganda," NATO spokeswoman Oana Lungescu said Saturday.

Journalists who were taken to a hospital were shown at least four people said to be killed in the strike, including two young children. It was not possible to independently verify the government's account of what happened. Foreign journalists in Tripoli are not allowed to travel and report freely.

On Friday, Prime Minister al-Baghdadi al-Mahmoudi accused NATO of a "new level of aggression," and claimed that the military alliance intentionally targeted civilian buildings, including a hotel and a university. He has called on the United Nations to take action to stop NATO's daily bombing runs.

Libya's Health Ministry says 856 civilians have been killed in NATO airstrikes since they began in March. The figure could not be independently confirmed. Previous government tolls from individual strikes have proven to be exaggerated.

Late on Saturday, NATO announced that it had mistakenly struck a column of Libyan rebel vehicles in an airstrike near an eastern oil town two days earlier and expressed regret for any casualties that might have resulted.

The alliance has accidentally hit rebel forces before in its air campaign to protect civilians in the civil war between Gadhafi's military and the fighters trying to end his more than four decades in power.

The rebels also have complained that NATO's strikes have not helped them gain decisive momentum against the Libyan leader's better trained and equipped military, which still has firm control over most of western Libya. The rebels control much of the east.

The alliance statement gave no figures on casualties from Thursday's airstrike, but said it regretted "any possible loss of life or injuries caused by this unfortunate incident."

NATO said its forces spotted a column of military vehicles near the frequent flashpoint town of Brega where forces loyal to Gadhafi had recently been operating and hit them because they believed they posed a threat to civilians.

International military forces have had some trouble in hitting government troops because of their proximity to civilians. Gadhafi's troops have also used civilian vehicles, making them difficult to distinguish from rebel forces.

A doctor in the nearby city of Ajdabiya said the bodies of four rebel fighters were brought to his hospital around the time of Thursday's strike, but it was not possible to confirm whether they were killed in the bombardment.

A rebel military spokesman, Abdel-Rahman Abu-Sin, said Saturday that they appreciated NATO's efforts and understood the difficulty in differentiating between the two sides along shifting front lines.

Thursday's airstrike was similar to one in April during which NATO hit a convoy of rebel tanks, killing at least five fighters. NATO officials said at the time they did not know the rebels had any tanks, a statement that raised eyebrows as footage of the fighters with tanks had been on YouTube for weeks.

A coalition including France, Britain and the United States launched the first strikes against Gadhafi's forces under a United Nations resolution to protect civilians on March 19. NATO, which is joined by a number of Arab allies, assumed control of the air campaign over Libya on March 31.