Firefighters arrive at the scene of an apparent explosion in Manhattan's Chelsea neighborhood, in New York, Saturday, Sept. 17, 2016. A law enforcement official tells The Associated Press that an explosion in the Chelsea neighborhood appears to have come from a construction toolbox in front of a building. The official spoke on condition of anonymity because the person wasn't authorized to speak about an ongoing investigation. Police say 26 people have sustained minor injuries in the explosion on West 23rd Street. (AP Photo/Andres Kudacki)

Feds test bomb remnants of New York blast that injured 29

Authorities said the Manhattan bombing and the blast 11 hours earlier at the site of a 5K race to benefit Marines and sailors in Seaside Park, New Jersey, didn’t appear to be connected, though they weren’t ruling anything out.

Artavius Richards (left) and Darrell McDaniel each face three counts of murder.

FWPD: 2 men accused of February triple homicide arrested

Darrell McDaniel and Artavius Richards each face three felony counts of murder.

Mercer County Sheriff Jeff Grey addresses the media on Thursday, Sept. 8, 2016.

Sheriff: Bones found in state park still unidentified

A race has not been determined and police are looking to determine the ancestry of the victim. The bones were found Jan. 3 along a tree line in a state park off U.S. 127 near Coldwater Creek in Celina, Ohio.