The British woman who fled her home to join the Islamic State has reportedly been killed.
Pentagon spokesman Maj Adrian Rankine-Galloway said: "I do not have any information that would substantiate that report but that could change and we are looking into this".
Tabloid newspaper The Sun said U.S. authorities had told them that Sally Jones, a former singer in a rock band, and her 12-year-old son died in June near the border with Iraq. Later, she became interested in music and played bass guitar in an all-girl punk band called Krunch.
Both Rankine-Galloway and Corbyn were responding to a report Thursday by The Sun that cited Central Intelligence Agency officials in reporting Jones' death - by a drone strike in June near the Syria-Iraq border.
Once in Syria, she married ISIS member Junaid Hussain, with whom she was having an online relationship.
What did she do for the group?It is likely that her son Jojo, 12, was also killed.
If Jones was killed, she would have been the first woman to have been targeted in such a drone strike.
Jones is among many suspected IS operatives on a United Nations sanctions list, which includes a travel ban and a freeze on her assets. She was setting up all-female terrorist cells to attack Western countries, The Times of London reported.
She also posted comments such as: "You Christians all need beheading with a nice blunt knife and stuck on the railings at Raqqa".
"The premise that Sally Jones and her son are dead is probably accurate".
Major General Chip Chapman, the former MoD head of counter terror, said Jones would have been a "significant" target as a result of her alliance with Hussain and her role in recruiting IS fighters.