Overview

• Two vials of blood were found in a package delivered to the Republican National Committee's Washington headquarters.
• Hazardous materials teams were called in, and the building was evacuated for about two hours.
• The vials were addressed to former President Donald Trump, though the sender's identity remains unknown.
• Capitol Police have cleared the package but continue to investigate its source and contents.
• The incident comes ahead of the Republican National Convention, where Trump is expected to be the official 2024 nominee.