A U.S. Olympian was injured this week as she attempted to save her sister from a fatal stabbing.

According to the New York Post, Danielle Scott witnessed the alleged attack on her sister, 51-year-old Stephanie Vallery, by the latter’s estranged husband.

Police say 49-year-old Michael Vallery fled the scene and authorities were still looking for him as of the latest reports available.

The stabbing took place Sunday at Stephanie Vallery’s home in Baton Rouge, Louisiana. Scott happened to be at the residence at the time, police say.

According to reports, a domestic dispute became increasingly heated, prompting a friend to call Stephanie Vallery’s daughter, who rushed to the victim’s home.

The daughter, also named Danielle Scott, said Michael Vallery “was in a rage” when she arrived.

“Things escalated a little more,” she said.

After initially leaving the scene, she said he “came back through a window” about three minutes later.

“He started stabbing her and we were pulling him off of her and fighting for the knife,” the victim’s daughter said.

She said she told the suspect that he killer her mother, but he “just didn’t care” and continued stabbing the victim before leaving the residence.

The elder Scott, a five-time member of the U.S. Olympic volleyball team and two-time silver medalist, was stabbed in the altercation and transported to an area hospital where she underwent emergency surgery.

As of the latest updates available, she remained hospitalized in stable condition.

“USA Volleyball sends our strength, love and support to Danielle and her family,” team CEO Jamie Davis confirmed in a statement. “We are deeply saddened by this heinous incident yet so proud of Danielle’s incredible bravery and wish her a speedy recovery.”

[Featured image: Danielle Scott, video screenshot]