TULSA, Okla. — An explosive found in the Oklahoma apartment of a man accused of setting off a pipe bomb near a military recruiting office had “unusual” features usually seen outside the U.S., according to a preliminary FBI investigation.

Court documents show the FBI determined that one of two pipe bombs found in 28-year-old Benjamin Roden’s apartment in Tulsa utilized two 9-volt batteries and magnets, the Tulsa World (http://bit.ly/2tGpNQK ) reported.

A government affidavit states that the nature of the pipe bomb was “unusual for Oklahoma,” and that it had features “typically seen in other parts of the world.”

Roden was arrested July on 11 in connection to a pipe-bomb explosion outside an unoccupied Air Force recruiting office in Bixby, a suburb of Tulsa.

U.S. Attorney Loretta Radford said last week that the explosion hadn’t been characterized as domestic terrorism, but that the investigation was ongoing. A voice message left by The Associated Press seeking details about the case was not immediately returned Wednesday by Radford’s spokeswoman.

Roden is a former Air Force senior airmen trained as a firefighter. He was discharged from the Oklahoma National Guard in April, according to a spokeswoman for the 138th Fighter Wing in Tulsa. She said Roden joined the Air National Guard in 2014, after leaving the Air Force.

Air Force officials told investigators that Roden resigned from active duty Air Force after failing to complete training to become a certified electrician.

Roden’s attorneys have questioned whether he can assist in his own defense. A competency hearing is scheduled for August 29.


This story has been corrected to show that Roden was arrested on July 11, not June 11.


Information from: Tulsa World, http://www.tulsaworld.com