Who was behind the deadly church shooting in Jordan?

Security forces in Jordan are searching for three gunmen who opened fire at a church in Karak governorate on Friday, killing eight people and injuring dozens more, according to Jordan’s Ministry of Health. King Abdullah II said those behind the attack would face the “harshest penalties”, as he offered his condolences to the victims’ families. He has ordered a review of the country’s security procedures for responding to terrorist attacks. Authorities are calling this rare attack on a Christian place of worship an act of terror, with the perpetrators yet to be identified. Here’s what we know about how the attack unfolded, and what was behind it.