PORTLAND, Ore., May 7 (UPI) -- The FBI has taken a Portland, Ore., lawyer into custody as a suspect in the March 11 bombing attacks in Madrid, CNN reported Friday.
Brandon Mayfield, 37, is being called a material witness, which means he can be held and not charged while investigators question him about the incident that killed 190 people.
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Sources told CNN Mayfield is a convert to Islam, and his fingerprints were found on a plastic bag with bomb-related material that had been connected to the Madrid attack.
Mayfield had been under around-the-clock surveillance by law enforcement, the sources said.
A spokeswoman for the FBI in Portland said agents served two search warrants Thursday, but would not comment further.