Activists hold posters with a portrait of the Jordanian pilot Maaz al-Kassasbeh, who was captured and reportedly killed by ISIS. (KHALIL MAZRAAWI/AFP/Getty Images)

ISIS has reportedly executed another prisoner, a Jordanian pilot named Muath al-Kasasbeh, who was captured by ISIS in December. A video purporting to show him being burned alive by masked militants appeared online today, several days after ISIS released footage appearing to show Japanese journalist Kenji Goto, being beheaded.

The Jordanian government had agreed to ISIS’s request that they release an al Qaida prisoner held in Jordan, but negotiations fell through after ISIS refused to consider the release al-Kasasbeh in return. The method of killing marks a shift for the group, which has previously beheaded its foreign hostages.

According to BuzzFeed, demonstrations erupted across Jordan mourning al-Kasasbeh, with some protestors calling for the execution of Jordan’s al Qaida prisoner.

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