US fighter aircraft carried out three air strikes in Syria yesterday, while fighter jets, bombers and helicopters were used in six assaults against IS positions in Iraq today, US Central Command said in a statement.
An airstrike in Syria northwest of Al Mayadin destroyed a bulldozer, two tanks and another vehicle.
Twin strikes northwest of the IS group's Raqa stronghold pounded an IS unit and destroyed six firing positions, the statement said.
The strikes come after a global wave of revulsion triggered by the IS group's beheading of British aid worker Alan Henning, made public in a video that emerged on Friday.
The US launched air strikes in Iraq in August before widening the campaign to include targets in Syria last month.