A cheerleader for the San Francisco 49ers appeared to kneel during the US national anthem at an NFL game on Thursday, echoing recent player protests.
The woman, who has not been identified, was pictured kneeling before the team's game against the Oakland Raiders.
The 49ers are the former team of Colin Kaepernick, who knelt during the anthem as a protest back in 2016.
His aim was to highlight police brutality against African-Americans.
While the rest of the cheerleading squad held pom-poms aloft in unison during the Star-Spangled Banner, one woman knelt down and put her hands on her hips.
If her gesture is confirmed to be a protest, it would make her the first cheerleader to participate in such a demonstration.
NFL protests began in 2016, when Kaepernick - then the 49ers' quarterback - refused to stand for the anthem.
Similar demonstrations spread to other teams, with some choosing to link arms in solidarity rather than kneel.
But the action proved controversial, drawing criticism from fans and from US President Donald Trump.
He has called players who "disrespect" the US flag "sons of bitches" and called for them to be sacked.
