British IS recruiter Sally-Anne Jones 'killed' by drone
The BBC's security correspondent Frank Gardner said Jones had been a useful propaganda agent for the group and her death would be "significant".
Her death was first reported by The Sun.
Jones, from Chatham in Kent, had been used to recruit Western girls to the group and posted threatening messages to the UK.
She married the jihadist computer hacker Junaid Husain, who was killed in a drone strike in 2015.