A group that is operating in Gaza and which says it is associated with ISIS has claimed that it killed a top Hamas commander.

A group claiming to be associated with ISIS and operating in Gaza said that it killed a top Hamas commander.

A group that is operating in Gaza and which says it is associated with ISIS has claimed that it killed a top Hamas commander. According to the group, which calls itself the Army of the Islamic State, Saber Siam was killed when ISIS operatives placed a bomb on his car, blowing it up with him inside.

Siam was killed, the group said, because he was “a partner in a declared war against religion and against Muslims, working for the heretical government in Gaza.” ISIS warned Hamas to immediately “end its war against religion in Gaza” or “face the consequences.”

The group also sent out warnings on social media to Gaza residents to stay away from Hamas offices and buildings, lest they find themselves swept up in attacks against the group.

It was not possible to verify whether the group was associated with ISIS, or whether it even actually exists. However, Israeli sources confirmed that Hamas has been conducting actions against a group of Salafist rebels it accuses of trying to take over Gaza.