Reyaad Khan was an Islamic State member from Cardiff, Wales, UK.  Born in 1994, Khan was a "straight A student" who traveled to Syria, and joined the Islamic State in November 2013.  In mid 2015, Khan was killed in a drone strike in Raqqa, Syria.

List of Reyaad Khan's past suspended Twitter accounts [very incomplete]:

1712539154      (@dujjyy00)
3296827683      (@dujjyy_)
3317745514      (@dujjy00)
3342002291      (@dujjy15)
3321690663      (@dujjy47_)
3244693521      (@dujjy47)
3244690167      (@dujjy010)
3244686615      (@dujjy_01)
244775632        (@dujjy001)
3148794837      (@dujjy01)
3164912747      (@dujjy1)
3122553441      (@dujjy)
3081798499      (@RedBandana3)
2981611641      (@dujana99lives)
2953913495      (@AbuHeadshot)
2907736155      (@AbuDuj14)
2873638090      (@abudujana56)
2800717317      (@4budujana)
2794763015      (@AbuDujana___)
2796480705      (@abudujanaaa)
2789078764      (@abudujanaisback)
2747754591      (@abudujana47)
2737430781      (@abudujanark)
2626330313      (@abudujanaisis)
2567485394      (@Abu_Dujana_)
2267091730      (@AbuDujanaMuhajr)
1829659764      (@dujana99)
1537620055      (@AbuDujanahRK)

News articles about Reyaad Khan:

http://www.dailymail.co.uk/news/article-2714833/Reyaad-Khan-British-jihadist-Syria-tried-war-crimes-jailed-life-using-Twitter-brazenly-boast-role-execution-prisoners.html

http://www.telegraph.co.uk/news/worldnews/middleeast/iraq/10919096/Father-of-British-jihadist-prays-he-goes-to-hell.html

http://www.dailymail.co.uk/news/article-2797690/posing-ed-balls-reyaad-khan-5-years-later-turned-jihadist.html

http://news.sky.com/story/1287125/jihadists-mother-pleads-for-him-to-return-home

http://www.bbc.com/news/uk-wales-34125743

http://justpaste.it/Jihadi_Real_ID

https://twitter.com/Jihadi_Real_ID/