A 23-year-old Navy veteran who had worked as a prison guard until his arrest in March has been found dead in his jail cell. Henrico County authorities confirmed this week that an investigation is under way into the apparent suicide of Brian R. Cramer, who was found dead Sunday, hanged from a bed sheet in his cell. Henrico Sheriff Mike Wade said that Cramer was being kept in an isolation area of Henrico Jail East, which is in New Kent County, and had been checked by jail personnel 20 minutes before his body was discovered.