Russia's Defence Ministry has said the wreckage of the military plane that crashed into the Black Sea on Christmas Day - killing all 92 people on board - shows no signs of damage from an explosion or fire, Russian media reported.
More than 3,000 people have been involved in the search for victims' bodies and aircraft debris. Two black boxes have since been recovered.
One of the black boxes from the Russian TU-154 plane which crashed into the Black Sea has been found, the Russian defence ministry has said.
State television showed footage of rescue workers on an inflatable boat carrying a container with a bright orange object covered in water.
Sources quoted by the Tass news agency said the flight data recorder would soon be sent to Moscow for analysis.
Investigators have so far said that pilot error or a technical fault were likely to have caused the aircraft to come down.
The Democratic presidential candidate may also have shown his cards on his choice of running mate.
The US president also shared a post on Twitter accusing Dr Anthony Fauci of misleading the public over hydroxychloroquine.
Fears over an impending second wave of coronavirus dominates Wednesday’s front pages.