This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated.SAN DIEGO — A group of armed robbers burst into a local credit union and held customers at gunpoint, escaping with money from a vault. Three or four men walked into the San Diego County Credit Union on Centre City Parkway near Felicita Avenue around 10 a.m., Escondido Police Department said. The men ordered everyone inside to the ground. Two workers were ordered to take a robber to the vault, where he stole an unknown amount of cash. The robbers took off in an older model, blue Chevy Suburban and had not been arrested as of Thursday afternoon. Witnesses told investigators that the robbers were dressed in dark-colored pants, sweat shirts and masks. About a half-dozen employees were in the office during the holdup. There were no customers there at the time, investigators said. The FBI was called to take over the investigation.