An investigation has begun into what caused a commuter plane to crash into a house in New York state, killing 50 people.
Teams of police, special agents and air safety officials have been involved in the search for clues in Clarence Center.
Recordings on the black boxes recovered from the scene reveal the pilots noticed a build-up of ice on the wings before landing.
The crash has thrown the media spotlight on the small hamlet of Clarence Center, a suburb of Buffalo.
A memorial service was held on Friday evening for mourners to pay their respects to those who had died.
Among those being remembered were a 9/11 widow and lobbyist, a human rights activist, students and musicians.