A woman was stabbed on Friday at a Miami Beach art gallery with onlookers thinking the incident was part of an exhibit.

Siyuan Zhao, 24, confronted the victim at Art Basel in the Miami Beach Convention Center on Friday evening after Zhao said she was "purposely following her around the art show and bumping into her several times," WPLG reports. Miami Beach Police said Zhao stabbed the woman with an X-Acto knife in the neck and left shoulder "without warning or provocation."

Police said Zhao told officers that she “had to kill (the victim) and two more” and that she “had to watch (the victim) bleed.” The woman who was stabbed had non-life-threatening injuries and was taken to the hospital.

According to the Miami Herald, patrons at the art gallery did not initially realize what was happening and assumed it was part of the exhibit. "A guy walked up to me and said, 'I thought I saw a performance, and I thought it was fake blood, but it was real blood,'" Miami artist Naomi Fisher said.

Sculptor Gregg Hill told the Herald that people were told a sculpture fell on the woman and went back to looking at the exhibits. “I thought a piece of art fell on her,” he said. “I never would have thought there would be a stabbing at Art Basel. … People didn't really know what had happened. It was calm and everyone was milling around and talking.”

Zhao faces a charge for attempted murder and is being held on $7,500 bond.

Read more at WPLG and the Miami Herald.