WEST YELLOWSTONE, Mont. — Search teams located the site of an airplane crash that killed three people near Yellowstone National Park using the last known location of the smart watch from one of the victims, authorities said Monday.

All three on board were found dead after the plane went down Friday after taking off from West Yellowstone Airport, authorities said.

The dense timberlands in a small town near West Yellowstone, Montana, concealed the wreckage of a small plane until an unlikely beacon — a victim’s smartwatch — helped search-and-rescue crews locate the crash site,