The Barack Obama administration has dropped all charges against the mastermind of the USS Cole bombing.

WASHINGTON (AP) — The Pentagon’s senior judge overseeing terror trials at Guantanamo Bay dropped charges Thursday against an al-Qaida suspect in the 2000 USS Cole bombing, upholding President Barack Obama’s order to freeze military tribunals there.

The charges against suspected al-Qaida bomber Abd al-Rahim al-Nashiri marked the last active Guantanamo war crimes case.

The legal move by Susan J. Crawford, the top legal authority for military trials at Guantanamo, brings all cases into compliance with Obama’s Jan. 22 executive order to halt terrorist court proceedings at the U.S. Navy base in Cuba.

Seventeen US citizens were murdered in that bombing.