Injured Australian teen inside Gweiran prison in northeastern Syria describes non-stop shooting, says many children killed; Kurds say 550 inmates have surrendered

Canadian Mohammed Khalifa narrated videos as part of cell that filmed murders of James Foley and American-Israeli Steven Sotloff

Court papers in the trial of two cell members show authorities detained them on multiple occasions due to their radical activities, but released them every time

UK-born Alexanda Kotey admits to involvement in scheme to kidnap and torture Westerners, including Israeli-American Steven Sotloff, among four beheaded by group

Court documents show British citizen Alexanda Amon Kotey, whose cell murdered US-Israeli journalist Steven Sotloff and others, has a scheduled change of plea hearing

Alexanda Kotey and El Shafee Elsheikh stand accused of belonging to a cell blamed for the jailing, torture and murder of Western hostages in Syria

2 suspects, allegedly part of brutal Jihadi cell dubbed 'The Beatles,' are on trial in US for helping terror group carry out killings, hostage negotiations

Suspects are two of the four terrorists dubbed 'the Beatles, for their accents, accused of killing Western hostages, including Jewish American journalist Steven Sotloff

Two IS terrorists go on trial for the killing of US journalists James Foley and Steven Sotloff, and aid workers Peter Kassig and Kayla Mueller

Ashwaq Haji Hamid was 14 when the terror group seized her hometown, killing the males and abducting the girls