HARTLAND, WI (AP; WLIP)–Authorities have identified the six people who died in an apartment fire in southern Wisconsin as two adults and four children-all of whom were shot.

Police said that all six lived together in one apartment of the four-unit building in Hartland.

Officials say the adults who died were Connor McKisick-who is thought to have a self-inflicted gunshot wound and his wife Jessica McKisick.

The children have been identified as a 14-year-old girl, a 12-year-old girl and two 3-year-old boys.

The children’s names were not disclosed.

At a press conference Monday night, police revealed that all suffered from a single gunshot wound.

A fire accelerant was also discovered in the unit.