Libya’s state television said on Monday that the airstrike targeted Zlitan, west of the city of Misratah.
NATO has conducted hundreds of sorties over Libya since it assumed control of a military campaign to impose a no-fly zone over the country and save civilian lives in late March.
The US and NATO have unleashed a punishing, UN-mandated offensive against Colonel Muammar Gaddafi to pressure him into giving up power.
However, the airstrikes by the military alliance have killed dozens of civilians as well as revolutionary fighters.
Libya has been the scene of fierce fighting between Pro-Gaddafi troops and anti-regime forces since mid-February.
Revolutionary forces want an end to Gaddafi’s decades-long rule.
Experts say the main motive behind the Western attack on Libya is the vast oil reserves in the North African country.