At least four people have died after two seaplanes collided mid-air over southeastern Alaska on Monday.
US Coast Guard and Federal Aviation Administration officials said 10 people were injured in the incident, with two more reported missing.
According to reports, the two aircraft - one with 11 passengers, the other with five on board - were conducting excursions sold through Princess Cruise Lines.
The circumstances of the crash were not immediately known.

Qatari helicopter crashes during 'routine duty', rescue mission ongoing
Trump threatens Iran with power plant strikes over Hormuz blockade
Saudi Arabia orders Iranian military attache, embassy staff to leave
Ukraine says talks on resolving war to continue in US on Sunday
Trump threatens to send ICE to airports over funding impasse
