A coalition of several insurgent groups in Syria is claiming that it has freed a British woman and her five children who were kidnapped in the country.

The statement by Jabha al-Shamiya, or the Levant Front, was reported Tuesday by the U.S- based SITE Intelligence Group, which monitors militant websites.

On the group's Facebook page, it adds the woman had traveled to an area controlled by the rival Islamic State group to convince her husband to leave, but failed. The Front, mostly operating in northern Aleppo province, said the woman was kidnapped as she fled from the IS-held area; it didn't identify her kidnappers.

The British Foreign Office said a British woman and her five children have been reported missing in Turkey, but wouldn't confirm it is the same case.