Nike has said it is "deeply concerned" by rape allegations against footballer Cristiano Ronaldo.
The US sportswear giant - which has a contract worth a reported $1bn (£768m) with Ronaldo - said it would "continue to closely monitor the situation", the Associated Press reports.
EA Sports, which also has a contract with Ronaldo, made similar comments.
Ronaldo, 33, earlier "firmly" denied assaulting Kathryn Mayorga at a Las Vegas hotel in 2009.
Ms Mayorga, a 34-year-old US former teacher, was inspired to speak out by the #MeToo movement, her lawyer said.
"The MeToo movement and the women who have stood up and disclosed sexual assaults has given Kathryn a lot of courage," Leslie Stovall said.
Read also:Cristiano Ronaldo’s lawyers warned he could have been jailed for life
What did Nike and EA Sports say?
In a statement, Nike said: "We are deeply concerned by the disturbing allegations and will continue to closely monitor the situation."
Meanwhile, EA Sports told the AP: "We have seen the concerning report that details allegations against Cristiano Ronaldo.
"We are closely monitoring the situation, as we expect cover athletes and ambassadors to conduct themselves in a manner that is consistent with EA's values."
In a separate development, Juventus - the Italian club Ronaldo joined from Real Madrid for £99.2m in July - came out in defence of its player.
In a tweet, Juventus said: "Cristiano Ronaldo has shown in recent months his great professionalism and dedication, which is appreciated by everyone at Juventus."
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.@Cristiano Ronaldo has shown in recent months his great professionalism and dedication, which is appreciated by everyone at Juventus. 1/1— JuventusFC (@juventusfcen) October 4, 2018