The daughter of a former US ambassador to the United Nations has been charged with murder in the death of a Maryland man.

Sophia Negroponte, 27, was arrested Thursday night and charged with first-degree murder in the stabbing death of Yousuf Rasmussen, 24, according to Montgomery County police.

Officers said they responded to a report of a stabbing at a Rockville City home and found Rasmussen “suffering from what appeared to be a cutting wound.”

He was pronounced deceased at the scene, police said.

Police said Rasmussen and Negroponte were acquaintances and had been involved “in a disagreement.”

Negroponte is the adopted daughter of John Negroponte, who served as the UN ambassador under President George W. Bush as well as the ambassador to Iraq. He was the Bush Administration’s director of national intelligence and the deputy secretary of state under both Bush and President Barack Obama.

Diana Negroponte, Sophia’s mother, told the Washington Post “We love her deeply.”