Nato said it has accidentally hit a column of Libyan rebels in an airstrike two days ago.
The alliance gave no figures on casualties but said tonight it regrets “any possible loss of life or injuries caused by this unfortunate incident”.
Nato said its forces saw a column of military vehicles on Thursday in an area where forces loyal to leader Muammar Gaddafi had recently been operating.
The alliance said it believed the vehicles posed a threat to civilians and hit them.
Nato said the vehicles were later confirmed to be part of an opposition patrol.