An official told ABC News there is security video from the floor and it is now being reviewed by LAPD detectives.
Allie Long tweeted on Thursday it happened after the team was honored at The ESPYS on Wednesday night.
LOS ANGELES, C.A -This is why we can't have nice things.
United States' Megan Rapinoe, center, with Alex Morgan, left, and Allie Long, celebrate with the trophy after winning the Women's World Cup final soccer match between the USA and The Netherlands at the Stade de Lyon in Decines, outside Lyon, France, Sunday, July 7, 2019. Detectives were interviewing witnesses and reviewing surveillance video, he said.
The ring is reportedly worth $15,000 - but the key is priceless. The team returned to NY late Monday, spent much of Tuesday doing media appearances and then were feted with a ticker-tape parade Wednesday morning followed by a quick flight across country for the ESPYS at night. She made light of the situation on Instagram with a photo of her and husband Jose Batista in "USA Beat Everybody" T-shirts and Long shown biting her gold medal.