The Will County Coroner’s Office on Tuesday released the names of the two people killed by gunfire during a Halloween Party early Sunday morning in Joliet Township. Holly Matthews and Jonathan Ceballos, both 22 of Joliet, were pronounced dead at 3:45 a.m. Oct. 31 in the 1000 block of Jackson Street in Joliet Township. “Both subjects appeared to be victims of a homicide,” according to the statement from the coroner’s office.