The wife of Sen. Mitch McConnell (R-Ky.) reportedly left the country after he was hospitalized for an apparent heart attack.

Elaine Chao, 73, who served as transportation secretary in the first Trump administration, traveled to Beijing on June 17 to meet with Chinese Vice President Han Zheng to discuss China-US ties, according to The Daily Beast. Chao currently holds no official government positions.

Her visit to China came just three days after McConnell was hospitalized on June 14, according to a spokesperson.

McConnell’s office still hasn’t disclosed why he is hospitalized. But an audio recording obtained by an independent journalist suggests that emergency responders were called to his Washington, DC, home for an “unconscious” person the same day he was hospitalized.

In the audio, the dispatcher was heard saying the call is for a “cardiac arrest,” and a paramedic is heard saying, “CPR in progress.”

In a statement this week, McConnell’s spokesperson said he remains in the hospital and his health is improving.

“Senator McConnell appreciates the outpouring of support he’s receiving while he continues his recovery in the hospital,” a spokesperson said. “The Senator continues to improve and is working closely with his staff on Kentucky and Senate matters while the Senate is out of session.”