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By Hugo Bachega in Baghdad & Max Matza
BBC News
The US has conducted a drone strike against a senior commander of an Iran-backed militia in Baghdad, according to a US official.
Iraqi security sources say the drone attack on a vehicle killed at least three people, including the leader of Kataib Hezbollah.
The US blames the Iranian-aligned group for launching an attack that killed three American troops.
Last month, Kataib Hezbollah said it was suspending attacks on US troops.
The attack occurred in the city's eastern Mashtal neighbourhood, sparking several loud explosions.
A senior US defence official said it was carried out by a drone, according to CBS News, the BBC's US partner.
The official added that the Kataib Hezbollah leader was the target of the operation.
Other groups supported by Iran were also hit in the Wednesday night attack, according to Reuters and AFP.
The Kataib Hezbollah commander killed was responsible for operations in Syria, a member of the group told AFP.
The latest attacks come just days after US airstrikes targeted militia positions in Iraq and Syria in response to a deadly attack on a US base in Jordan last month.