The military would not say what type of aircraft was downed and said the circumstances of the incident were “unclear.”
The airstrikes hit targets in and around the Syrian city of Raqqa and the province with the same name.
The strikes were part of the expanded military campaign that Obama authorized nearly two weeks ago.
On Sunday, heavy clashes broke out between the IS militants and Kurdish fighters only miles from the Syrian border town of Kobani,
Militants of the extremist Islamic State group have been barreling through the area for the past three days.
The Observatory said on Friday that Islamic State jihadists had seized 60 Kurdish villages near the Turkish border
Syria’s civil war has killed at least 190,000 people, according to the U.N.
The military action will end only when they have ended the capacity of ISIL to engage in broad-based terrorist activity.
“It’s a very dangerous phenomenon, and we all need to be aware of how to deal with this issue,” said Iran FM.
The comprehensive approach to degrade and ultimately destroy ISIL requires a wide range of efforts, said Obama.
While the rhetoric against the ISIS has been consistent across the globe, their name hasn’t.
Several important tests loom for the U.S. administration’s nascent coalition to “degrade and defeat” the ultra-hardline Islamic State.
“I saw no point in cooperating with a country whose hands are dirty and intentions murky,” said Ayatollah.
US Secretary of State John Kerry ruled out any military coordination with Iran, which in the end was not invited to Paris.
“The air strike southwest of Baghdad was the first strike taken as part of our expanded efforts beyond protecting our own people,” said US.