The sparse statement by Graham’s office, which did not explain his death, comes during a stretch of concern about a lack of transparency about lawmakers’ health.

Sen. Lindsey Graham died at 71 of an aortic dissection due to arteriosclerotic cardiovascular disease. An ER doctor explains why it kills so fast and the warning signs.

The South Carolina senator’s office said the 71-year-old died after a “brief and sudden illness.”