Federal officials have arrested a Mississippi man for suspicious packages sent to U.S. leaders, including President Barack Obama.
The suspect has been identified as Kenneth Curtis.
Tuesday, a package sent to Sen. Roger Wicker, R-Mississippi, tested positive for ricin. A second package addressed to the president also contained a “suspicious substance.”
Wednesday, Senate offices were cleared over concerns about a suspicious envelope and a man with a backpack.
Ricin is a powerful poison that stops cells from producing the proteins they need to survive. This leads to system failures and can even prove deadly.