Police in Union County have arrested a man wanted since 2021 for the murders of a young mother and her 1-year-old daughter in Orlando, Florida, and the shooting of the mother’s boyfriend. The infant died after the mother was killed due to being left alone in a hot car, according to investigators in Florida. Doujon Duwayne Griffiths, 23, was arrested March 20 after a traffic stop in Linden when officers discovered outstanding first-degree murder warrants out of Orange County, Florida. Griffiths was charged with being a fugitive from justice and third-degree possession of heroin, court records s…