Kukors' attorneys Robert Allard and Ray Mendoza said in a statement that investigators with the Department of Homeland Security and officers from the Des Moines, Washington police department executed the search warrant.
Investigators have searched the Seattle home of a former U.S. swimming Olympic coach amid allegations that he sexually abused and took explicit photos of a world champion when she was underage. Kukors has made her name public through her attorneys and posted a 4,000-word statement on her website Friday.
"At no time did I ever abuse Ariana Kukors or do anything with her that was not consensual", he said in a statement Thursday. I was able to leave a terrible monster and build a life I could have never imagined for myself.
'But in time, I've realized that stories like my own are too important to go unwritten.
Former U.S. national team director Mark Schubert spoke to the Washington Post in December 2010 about rumours of a relationship between Hutchison and Kukors.
Hoelzer said Thursday that she never heard of Hutchison sexually abusing anyone but that he was emotionally and verbally abusive to her.
After the 2012 Olympics we were in a committed relationship and Ariana lived at my residence in Seattle for more than a year.
Hutchison left a Southern California program where he trained young women on the USA team in 2010 after speculation that he was sexually involved with a swimmer.
When Hutchison moved to California that year to coach at a training center, Kukors joined the roster of elite swimmers there.
Hutchison was the head coach on the 2008 US Olympic team and head coach of the 2009 US team at the world championships. The swim club did not return CNN's message requesting comment.
The allegations come as US authorities and police searched Hutchison's Seattle apartment this week. Kukors said she came forward to empower other survivors.
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"Much like the USOC knew about Larry Nassar years before his arrest and did nothing, USA Swimming had notice in 2010 that Sean Hutchison was involved in an inappropriate coach-athlete relationship with Ariana and took no actions to protect her or other swimmers from this pedophile", Allard said.
"During the USA Swimming investigation, both Ariana and Hutchison, as well as Ariana's sister, Emily, unequivocally denied the existence of a romantic or sexual relationship".
The 46-year-old Hutchison released a statement through his lawyer on Thursday, denying Kukors' claims.
"The abhorrent abuses associated with Dr. Nassar's case and the allegations by US Taekwondo athletics and USA swimmers are disgusting and outrageous, and raise serious concerns about protecting athletes from abuse and mistreatment in organized sports", the committee's chairman, Greg Walden, said in a statement.
"With the denials from both parties, the investigation provided no basis to conclude that a Code of Conduct violation occurred, and the case was closed", Isabelle McLemore, a spokesperson for USA Swimming said in a statement. "We probably should have known at the time that something was going on but I never thought anything of it. but looking back on it now and her meeting a coach in a hotel room, it makes you wonder now what was going on".
Hutchison has denied allegations of misconduct or that he groomed Kukors for abuse from a young age. "I wish I had", she said, adding that dating is common among coaches and their athletes in the sport. She says Hutchison was partly why she retired in 2010.
"It's still hard to comprehend, but Sean had perfected the art of grooming; I wasn't even aware I needed saving", Kukors wrote in the blog post.
"We are still in the very preliminary stages of this investigation, but obviously a top priority in all cases involving alleged online child exploitation is identifying any possible minor victims", Homeland Security spokeswoman Lori Haley said.
She wrote Friday that she and Hutchison didn't have intercourse before she turned 18.
"I'm proud of her for talking about these things, and we need to talk about them".