Nato is investigating Libyan government claims that it bombed a residential area of the capital, Tripoli, killing several civilians, BBC reports.
Bodies were pulled from a badly damaged three-storey house after the alleged raid in the Souk al-Juma district.
Nato says a surface-to-air missile site in northern Tripoli was successfully hit overnight, but it has previously admitted mistakes in targeting.
It is enforcing a UN resolution to defend Libyans from pro-Gaddafi forces.
If it is confirmed that Nato planes did indeed bomb a civilian area by mistake, serious questions will be raised about the conduct of the military campaign in Libya, says the BBC's Jeremy Bowen in Tripoli.
NATO probes 'civilian deaths' in attack on Tripoli
2750 views