A man described by city police as a major drug supplier to the region was headed to court Monday. Angel Orengo, 26, was scheduled to be arraigned in Springfield District Court on drug and gun charges following his arrest late last week. The Republican reported that police executing a search warrant raided Orengo’s home about 8:30 p.m. Friday and seized $15,000 worth of heroin, most packaged for sale, a stolen gun, and $107,000 in cash. Police said they also found packaging materials, scales, and other drug paraphernalia. Orengo was described by investigators be a high-level drug dealer responsible for supplying heroin to dealers across Western Massachusetts.