Police performing a welfare check at Krzysztof Nieroda's 18 Chatham Pl. home around 9:30 a.m. Sunday found him, his wife Justyna, 41, his son Sebastian, 14, and his daughter Natalie, 13, suffering gunshot wounds Union County Prosecutor William A. Daniel and Linden Police Chief David Hart said.
Sebastian was rushed to the hospital, where he ultimately died, authorities said.
Krzysztof Nieroda, 41, killed himself with a single gunshot to the head, authorities said. The weapon was located in his hand when authorities arrived.
Click here to follow Daily Voice Ridgefield Park-Hasbrouck Heights and receive free news updates.