(CNN) -- Coalition troops in eastern Afghanistan accidentally killed four women and a child during an operation against the Taliban, the U.S.-led coalition said on Friday.
The incident took place on Thursday in the Giro District of Ghazni province, the coalition said.
"The coalition regrets the death of these non-combatants," Lt. Col. Rumi Nielson-Green, a coalition official said. "We are planning to conduct a full and thorough investigation."
Troops had been targeting a Taliban militant suspected of coordinating "foreign fighter operations."
The coalition said troops "were threatened by several armed militants" when they approached a compound, and fired at the militants -- "inadvertently killing four women and a child located with them."
Several militants were killed and three were seized by troops. Four other children were not hurt. Bomb materials were found in the compound.
In western Afghanistan, a roadside bomb targeting a convoy on Friday killed a coalition service member, the U.S.-led coalition said.
The precise location was not available and the name and nationality of the service member was being withheld pending next-of-kin notification.
In the southern province of Helmand, Afghan and coalition forces on Thursday killed at least four militants who were setting up a roadside bomb, the coalition said Friday.
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