Activists look for suspect seen scrawling '1488,' a neo-Nazi code, on New York's L line, document tags across city

Police officials say killing appears to have been an unprovoked attack

Frank James to appear at courthouse for first time since he was arrested for mass shooting in which 10 people were wounded

Frank R. James is set to appear in court after he was charged with a federal terrorism offense that carries a sentence of up to life in prison

Following manhunt, Frank R. James detained in Manhattan's East Village neighborhood, a day after attack that left 10 people wounded by gunfire

Frank R. James now considered main suspect in attack that left five in critical but stable condition; social media rants scrutinized

Authorities looking for man with addresses in Wisconsin and Philadelphia who rented U-Haul, but unclear if connected to attack; investigators say 33 shots fired before gun jammed

Gunman who opened smoke canister in N train before firing at passengers remains at large; 16 injured, five of whom are in critical, but stable condition

Undetonated explosive devices reportedly found on scene in Brooklyn's Sunset Park; suspect may have dressed as a construction worker

Fires reported at three other stations nearby at the same time, no arrests made; driver died while assisting passengers to safety