Federal agents searched the home of a second Mississippi man who may have ties to the ricin-laced letters sent to President Obama and a U.S. Senator.
Officials, who began searching Everett Dutschke's Tupelo, Miss., residence around 11 p.m. CDT, declined to comment on the investigation.
This comes after after charges were dropped against Paul Kevin Curtis, who police arrested last week.
The suspects know each other and have feuded. But both men say they have no idea how to make the poison and they had nothing to do with the letters.
So far, no charges have been filed against the Dutschke.