DETROIT, MI — A Detroit Terror Suspect previously accused
 of plotting with a Maryland imam to commit an act of 
violent jihad on behalf of the Islamic State faces new 
charges of acquiring an arsenal of weaponry that he
 allegedly planned to use in an unspecified attack to kill 
people, according to an indictment handed down Friday
 in U.S. District Court in Detroit.
The new charges against Sebastian Gregerson, 30, accuse 
him of receiving explosive materials, grenades, assault
 weapons, handguns, rifles, shotguns and thousands of
 rounds of ammunition.
The indictment does not repeat earlier allegations that 
Maryland Imam Suleiman Bengharsa helped finance the arsenal.
In September, The Detroit News obtained more than 200 
pages of sealed FBI Search Warrant affidavits in an
 investigation spanning at least three states. Gregerson, 
who also goes by the name Abdurrahman Bin Mikaayl, 
was arrested in Monroe on July 31 after a months-long
 investigation that he allegedly bought fragmentation grenades
 from an undercover FBI agent and amassing an arsenal of weapons.
“Based on the totality of the aforementioned information 
and evidence, there is reason to believe that Bengharsa and
 Gregerson are engaged in discussions and preparations
for some violent act on behalf of (the Islamic State),” an
 FBI agent wrote in a Jan. 7 search warrant application.

The grenades Gunderson and Bengharsa allegedly
 purchased were similar to the type used by Umar
 Farouk Abdulmutallab, the “underwear bomber” who
 was sentenced to life in prison for a failed Christmas 
Day 2009 terror attack on a Detroit attack on an airplane 
bound for Detroit from Amsterdam. That grenade 
contained 26 ounces of TNT and another explosive.
Gunderson, who is being held without bond at the
 federal prison in Milan, is merely a gun enthusiast, his
 court-appointed attorney, David Tholen, has argued, 
noting that the firearms were legally obtained. If the 
government has evidence he plotted jihad, it should file
 terrorism charges, Tholen said.
The imam has called the allegations that he and Gunderson
plotted jihad were “ridiculous” and “absolutely untrue”
in an exclusive interview with The Detroit News in September.
For more on this story, go to the Detroit News.
Photo via FBI