Families of those killed in Sunday’s tragic plane crash in Ethiopia will wait a little longer before receiving the remains of their loved ones.

Ethiopian Airlines made the announcement on Tuesday, acknowledging that the identification of some victims will take much longer due to the impact and ensuing fire.

The Ethiopia Airlines flight 302 crashed on Sunday a few minutes after takeoff, killing all 157 people on board.

Data released following the tragedy indicated that those on board at the time were from at least 30 different countries.

“The process of identifying the victims will take at least five days,” Ethiopian Airlines spokesman Asrat Begashaw said in Addis Ababa.

“Families will be notified.”

The plane’s Black Box was retrieved on Monday, and is expected to help investigators in the quest to know the cause of the crash.

Following that tragic crash, Ethiopia, China, Indonesia and Australia have all suspended the use of the Boeing 737 MAX 8, with reports suggesting possible software changes by Boeing were not communicated to pilots worldwide.