Sen. Mitch McConnell remains hospitalized as “he continues his recovery,” a spokesperson for the Kentucky Republican said in a statement on Thursday.

The former GOP leader’s office still hasn’t disclosed the cause of McConnell’s hospitalization since he entered on June 14.

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

The statement from McConnell’s office follows the release of an EMS audio recording published by an independent journalist that indicates emergency responders were called to his Washington, DC, home for an “unconscious” person the same day he was hospitalized last month.

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