The Sacramento Kings and NBA announced on Friday they have cleared coach Luke Walton after a four-month investigation into allegations of sexual assault and harassment.

Kelli Tennant, a former Spectrum SportsNet reporter, sued Walton on April 22, accusing him of sexual assault, verbal and physical harassment and unwanted physical contact over a three-year period.

A day later, Tennant held a press conference and recounted an alleged incident at a Los Angeles hotel in 2014 during which, she said, Walton pinned her to a bed.

At the time of the alleged incident Walton was an assistant coach with the Golden State Warriors.Tennant's lawsuit and news conference came only a week after he was named the Kings head coach.

Her allegations prompted the NBA and Kings to launch a joint investigation. Almost two-dozen people were interviewed during the investigation, but despite "repeated attempts" to interview Tennant, she did not participate on the advice of her legal team, according to an NBA statement.

The statement read: "Based on this and the available evidence, the investigators determined that there was not a sufficient basis to support the allegations made against Coach Walton."

Tennant's civil suit is believed to still be active. Tennant's attorney, Garo Mardirossian of Los Angeles, did not immediately respond to a request for comment by the Sacramento Bee.

Walton, who coached the Los Angeles Lakers for three seasons before parting ways with the team in April, takes over a Kings club that finished 39-43 last season.

"I am 100 per cent focused on coaching the Sacramento Kings and energised to work with this incredible group of players and coaches as we start this preseason," Walton said in a statement on Friday. "I will have no further comment."

"Luke Walton is our head coach and we support him and his team as they continue to prepare for the upcoming season," the Kings said in a statement.

Willie Cauley-Stein said he could not turn down the opportunity to join the Golden State Warriors.

Cauley-Stein signed a one-year deal with Golden State shortly after he became an unrestricted free agent when the Sacramento Kings rescinded his qualifying offer in early July.

The 25-year-old center said the Warriors' stars helped recruit him to the team, who lost the NBA Finals to the Toronto Raptors.

"Got the phone call and I just don't know how you could turn that down," Cauley-Stein said. "Talking to [head coach] Steve [Kerr], Draymond [Green], Steph [Curry], they were all really excited. It was pretty easy on me."

Cauley-Stein said before 2018-19 he was "ready to get paid" this offseason. But, his contract with the Warriors is reportedly worth about the veteran's minimum of $1.7million.

"It honestly just came down to situation," Cauley-Stein said. "I know I had said something about getting paid at the beginning of the year. But by the end of it, it was no longer about getting paid. It was about staying secure and building off that security… I think the Warriors are probably the best at doing that in the league. It was a really easy decision on me and my team's part."

Cauley-Stein averaged 11.9 points and 8.4 rebounds for the Kings last season.

He was originally selected by the Kings with the sixth pick in the 2015 draft, however, Sacramento general manager Vlade Divac said in June that Cauley-Stein still needed to prove he can be consistent.

"I don't really look at it like inconsistency," Cauley-Stein said. "Numbers don't lie. I think it's pretty cut and dry what consistency is. But I think it goes both ways. Being more vocal, I think that's something as a professional you have to be really good at. You have to be able to speak your mind."

The Warriors also added D'Angelo Russell in a sign-and-trade after star Kevin Durant decided to join the Brooklyn Nets.

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