A grand jury in Mississippi will hear the evidence against James Dutschke, the man suspected in the mailing of letters laced with the poison ricin to President Barack Obama and others.

Justin Sullivan, Getty Images

A judge today ruled that there's enough probable cause to send the case to a grand jury.

An FBI agent testified today that a dust mask that tested positive for ricin also contained DNA from Dutschke.

Dutshcke was arrested Saturday. He is suspected of sending the poison-laced letters to Obama, U.S. Sen. Roger Wicker and a Mississippi judge.

Dutshcke's attorney waived a detention hearing, so he will remain behind bars. He has previously denied sending the letters.


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