Minneapolis police said Friday they’re still investigating sexual assault allegations made against a Chinese billionaire arrested last weekend in Minneapolis.

Liu Qiangdong, also known as Richard Liu, has returned to China since his arrest Friday night. He was released the following day without posting bail. The case has drawn international interest, but the Minneapolis Police Department (MPD) declined to disclose details.

“Because this investigation is ongoing, the MPD will not be releasing any information regarding this case,” police spokeswoman Sgt. Darcy Horn said in a statement. “Once completed, the information gathered will be given to the County Attorney’s Office, which is standard procedure.”

Liu is the founder of Beijing-based JD.com, an e-commerce site with more than 300 million customers. The company said in a statement on the Chinese social media site Weibo that Liu was falsely accused while on a business trip, but that police found no misconduct and that he would continue his travels as planned.

“We will take the necessary legal action against false reporting or rumors,” the statement read.

Liu was in Minneapolis as a student in the U’s Carlson School of Management doctor of business administration China program, a university spokeswoman said Sunday. Program participants were in the Twin Cities from Aug. 26 through Sept. 1 as part of their residency. A source confirmed that the alleged victim was a Chinese student at the U.

Liu’s attorney, Joe Friedberg, said earlier this week that he did not expect further developments in the case and noted that police did not seize Liu’s passport.

Minneapolis police spokesman John Elder confirmed Monday that Liu had been released from police custody.

“We released him with the understanding that we were very confident we’d be able to reconnect with him as necessary in the investigation,” he said.