Police are investigating a fatal shooting at a home in Union County.Authorities say a 31-year-old man was shot to death at a home on Fairmount Avenue Monday night.A woman identifying herself as the victim's cousin told News 12 New Jersey that his name was Ronson Holmes. Police have not yet released the victim's identity and are still searching for a suspect or suspects involved in the shooting. There is no word yet on a possible motive.