Dozens of mourners filled St. Joseph's Church in Toms River to remember Brandon Holt.
The Asbury Park Press (http://on.app.com/16UAe2G) reports green ribbons were tied around nearby trees - representing Brandon's favorite color - and many mourners wore green ribbons or green attire to honor the boy's memory.
Family, friends and neighbors of Brandon gathered in Toms River Friday night at a wake and vigil to grieve together.
Brandon was playing with his neighbor on Monday, when police say the younger boy got a rifle from his family's home and accidentally shot Brandon in the head.
Brandon's uncle says his family is still looking for answers.
"Nobody knows what really happened. A gun did take my nephew's life, but why? Why did he get it? You know, we don't know," said Randel Holt, the victim's uncle.
Brandon's family has donated his organs.
Investigators are gathering evidence to find out how the younger boy got the gun.
The Atlantic County Prosecutor's Office took over the case because the parents of the 4-year-old have relatives who worked in law enforcement in Ocean County.