A Chinese-born researcher at the University of Pittsburgh who was on the verge of “very significant findings” about the Wuhan coronavirus has been killed in a suspected murder-suicide.

Dr. Bing Liu, a 37-year-old research assistant professor at the University of Pittsburgh School of Medicine, was discovered dead in his Pennsylvania home on May 2nd from multiple gunshot wounds, including one to the head. Another man – identified by the Allegheny County Medical examiner as Hao Gu, a 46-year-old software engineer – was discovered in his vehicle not far from Lui’s home, apparently from a self-inflicted gunshot wound to the head, BBC reports.

“The males are known to each other,” local police said in the statement. “Investigative leads developed throughout the weekend have led us to believe that the male from the car shot and killed the man in the townhome before returning to his own car and taking his own life.”

According to a statement made by Lui’s university department, the 37-year-old research scientist was a “profilic” researcher who was nearing closer to a breakthrough in studying the Wuhan coronavirus’s infection mechanisms via computer modeling

“Bing was on the verge of making very significant findings toward understanding the cellular mechanisms that underlie SARS-CoV-2 infection and the cellular basis of the following complications,” Lui’s colleagues wrote. “We will make an effort to complete what he started in an effort to pay homage to his scientific excellence.”

Since news of Lui’s death broke, many netizens have speculated that he may have been murdered because of the nature of his work. The Ross Township Police, however, have said that there’s currently “zero evidence” that the murder was connected to Lui’s research of the Wuhan coronavirus.

On Thursday, Ross Township Police said in a statement that their investigation into the matter determined that Lui’s death ultimately resulted from “a lengthy dispute regarding an intimate partner”.