What we know so far about incident involving helicopter carrying Iran president

The helicopter carrying Iranian President Ebrahim Raisi takes off at the Iranian border with Azerbaijan after President Raisi and his Azeri counterpart Ilham Aliyev inaugurated dam of Qiz Qalasi, or Castel of Girl in Azeri, Iran (Ali Hamed Haghdoust/IRNA via AP)

The apparent crash of a helicopter carrying Iran’s president and foreign minister on Sunday has sent shock waves around the region.

Details remained scant in the hours after the incident, and it was unclear if Iranian President Ebrahim Raisi and the other officials had survived.