If you were arrested and are now in the NCI database, kept by the FBI, they have to check it out before they can proceed, and they need your prints before the FBI will release the information. Anyone who was printed by the police or DHS will be in the system. Once they check it out, they'll get back to you. If it's bad news or good news, they'll let you know. Based on what you've said here, it's very unlikely to be bad news.