For more than three years Jones has been the world's most wanted female terrorist.
British IS recruiter Sally Jones is believed to have been killed by a US Air Force Predator drone strike on the border between Syria and Iraq.
Sally Jones was married to Junaid Hussain, a British jihadist and Isis hacker.
Sally Jones was killed by a Central Intelligence Agency drone strike on the Syria-Iraq borderWho was Sally Jones?
Jones was previously part of a punk group in Chatham, Kent. "We don't know for sure whether he was with her or not".
The Government was informed by Central Intelligence Agency chiefs in June that United States forces had killed Jones, 50, in a missile strike close to the Iraq/Syria border, The Sun reports.
But news of the success had been kept quiet on both sides of the Atlantic amid fears her 12-year-old son Jojo may also have been killed.
In July Aisha, the wife of a British ISIS fighter told Sky News she had once met Jones in the ISIS-controlled territory - she had since fled to a Kurdish refugee camp - and said she was unhappy and wanted to come home.
Reports say she was one of the most prolific planners of terror attacks.
Asked about reports Jones' son was killed in the strike, Maj Gen Chapman added: "It is a hard one because under the UN Charters he is under the age of what we would classify as a soldier".
"The UK and USA military has been working closely together on a number of high-profile targets in recent months and Jones is believed to have been on that list".
The US are reporting that she was killed while fleeing the Syrian city of Raqqa.
Junaid Hussain died in August 2015, with the extent of his involvement in planning terror plots coming to light.
She was active as an online recruiter and sometimes posted propaganda messages on social media, including a striking photograph of herself dressed as a nun pointing a gun towards the camera.