A raging fire seemingly caused by fireworks set off to celebrate a Christian wedding consumed a hall packed with guests in northern Iraq, more than 100 people and injuring 150 others as authorities warned on Wednesday the death toll could still rise.

Authorities said that flammable building materials also contributed to the latest disaster to hit Iraq’s dwindling Christian minority. In the fire’s chaotic aftermath, officials offered conflicting death tolls and security officials said they had detained staff at the wedding hall as part of their investigation.