Mr. Liu, 45, was taken into custody by Minneapolis police on Friday and released the next day.
He was detained over a sexual-misconduct allegation, which his company says is unfounded.
The Financial Times, citing two people with direct knowledge of the matter, said the case involved Liu, 45, a student in a business program at the University of Minnesota, and a Chinese student at the school allegedly during a USA business trip.
Jail records did not provide details on Liu's arrest or the alleged incident, and police said they could comment because it's an active investigation.
The Minneapolis arrest wasn't the only harsh spotlight on Liu this year.
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He was briefly arrested and held in Minneapolis Friday and released Saturday afternoon.
It said Liu had been participating in a business activity at the time when false accusations were made against him, and that a police investigation had not found any inappropriate behavior.
Liu, the founder and CEO of Chinese e-commerce giant JD.com, is estimated to be the 16th-richest man in China.
JD.com, the company which Liu founded in 1998, is an e-commerce juggernaut in China and the main competitor to industry leader Alibaba.
Police in the USA haven't released the name of the complainant but Chinese social media users circulated photos of a young woman whom they said was the victim.
Liu is the founder of JD.com, one of China's most popular e-commerce sites.
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Liu built JD.com from scratch.
His wife, Zhang Zetian, some 19 years younger, is a businesswomen and internet celebrity.
Liu recently tried to distance himself from sexual assault allegations against a guest at a 2015 party at his penthouse in Australia.
Liu, who also goes by the name, "Richard Liu", is registered as a student in the University of Minnesota's Carlson School of Management doctor of business administration China program, the Minneapolis Star Tribune reported.
At 24, she became China's youngest female billionaire in 2017.
Longwei Xu, a property developer, was later convicted of the crime.
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Durante las próximas semanas , el Congreso y los asesores de la sociedad civil y el sector privado podrán examinarlo. El acuerdo es el más avanzado en estándares laborales en todo el mundo.