July 9 (UPI) -- Regarding President Joe Biden's health, his doctor refused to testify Wednesday during a deposition with a House committee.

Dr. Kevin O'Connor cited doctor-patient privilege and the Fifth Amendment, his lawyer said in a statement.

"Earlier today, Dr. Kevin O'Connor asserted the physician-patient privilege, as well as his right under the Fifth Amendment to the U.S. Constitution, in declining to answer questions from the staff of the House Committee on Oversight and Government Reform regarding his service as Physician to the President during the Biden Administration," O'Connor's legal counsel said.

Last month the chair of the committee, James Comer, R-Ky., subpoenaed O'Connor. This was part of the group's investigation into the mental acuity of Biden while he was in office. They also want to know if he was aware of documents that were signed with his "autopen" signature.

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