Reigning 100m world champion Sha'Carri Richardson was arrested last weekend for allegedly assaulting her boyfriend at an airport in Washington.

The American sprinter, 25, was arrested last Sunday on a fourth-degree domestic violence offence, according to a police report obtained by The Associated Press.

That was four days before she ran in the opening round of the women's 100m event at the USA Track & Field (USATF) Championships in Eugene, Oregon.

The police report said an officer at the Seattle-Tacoma International Airport was notified by a Transportation Security Administration (TSA) supervisor of a disturbance between Richardson and her boyfriend, sprinter Christian Coleman.

It said the officer reviewed camera footage and observed Richardson reach out with her left arm and grab Cole

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