A US freelance journalist who was kidnapped in the Iraqi capital Baghdad a week ago has been released, according to Secretary of State Marco Rubio.

Iran-backed militia group Kataib Hezbollah said earlier on Tuesday that it would release Shelly Kittleson, who was taken on 31 March, on the condition that she leave Iraq immediately.

Rubio indicated the release reflects the Trump Administration's steadfast commitment to the safety and security of American citizens globally. He thanked Iraqi officials for their assistance in securing her freedom and mentioned that the US is working to ensure her safe departure from Iraq.

At the time of the 49-year-old's abduction, security forces in Iraq had been actively pursuing the kidnappers, leading to an arrest during their efforts.

Iraqi Prime Minister Mohammed Shiaa al-Sudani had previously ordered security forces to intensify their pursuit of those responsible for abducting foreigners.

Interestingly, the militia group announced plans to release a recording detailing Kittleson's activities in Iraq, though specifics remain undisclosed.

The kidnapping was part of an ongoing pattern of attacks by Iranian and allied Iraqi Shia militias against targets associated with the US in Iraq and the wider region amid heightened tensions.

Kittleson's emergency contact, CNN national security analyst Alex Plitsas, acknowledged having seen an alleged statement regarding her release but noted that there was no official confirmation from the US government at the time. It's understood that Kittleson had been warned multiple times by US officials about threats to her safety associated with her work.

According to Plitsas, Kittleson's name was reported to be on a hit list maintained by Kataib Hezbollah, indicating a targeted threat to female journalists.

Operating from Rome, Italy, Kittleson has reported on various conflicts in regions like Afghanistan, Iraq, and Syria, and her work has appeared in numerous publications. The US State Department continues to recommend against travel to Iraq due to ongoing security concerns.