Islamic State militants kidnapped girl after killing her family because they wouldn't let her marry former commander of Free Syrian Army.
New footage released by the militant group shows the mass decapitation of dozens of Syrian soldiers, and claims that American hostage Peter Kassig has been beheaded.
The visit coincides with an autopsy that may help determine whether a radical Islamist group or the Algerian army should be held responsible for mysterious killings that occurred in 1996.
Peter Kassig, a 26-year-old American aid worker, appeared in the beheading video of Alan Henning that was released Friday by the militant group.
An unconfirmed report claimed the Islamic State may have beheaded a second British hostage Saturday, the same day the militants released 49 other hostages unharmed.
The plot was to kidnap a random Australian citizen, and film them being beheaded in a bustling public space, before putting the footage up online.
British PM David Cameron vowed to "hunt down those responsible" for killing David Haines, but remained hesitant to join the US air campaign against the Islamic State.
A video released by the militant group Saturday appears to show the gruesome execution of a 44-year-old British aid worker.
The group claims to have beheaded Steven Sotloff in the latest video, which is being circulated to the media by SITE Intelligence Group.
The Sunni extremist group warned Iraqi Kurdish leaders to stop their close military cooperation with the US or others would be murdered too.
Twitter cannot stymie Islamic State propaganda by banning graphic images of James Foley's death, but there's no good reason to watch him die.