International Olympic Committee

The decision by the International Olympic Committee follows last year's McLaren report, which said more than 1,000 Russian athletes were involved in manipulating doping controls.

The decision to award the 2024 and 2028 games simultaneously is a first for the International Olympic Committee and the result of a trying bidding process.

Paris and Los Angeles are the only remaining contestants for 2024 after four other cities dropped out. The committee's decision means the 2024 loser can avoid mounting an arduous new bid for 2028.

The Olympic Channel, which launched as a digital outlet after this summer's Rio Games, will become an American TV network in the second half of 2017.

The news follows revelations last week that retested samples from 31 athletes in the 2008 Beijing Games had suspicious results.

After the retesting of samples from the 2008 Beijing Olympics, dozens of athletes from six sports could be banned from the 2016 Games in Rio, the International Olympic Committee said.