(AP) FBI agents have spent several hours searching the Philadelphia sheriff's office, removing files and other items as part of an undisclosed investigation.
FBI spokeswoman Carrie Adamowski confirms agents searched the office near City Hall. She says she can't comment on the nature of the investigation.
The sheriff's office handles real-estate foreclosures, warrants, inmate transportation and courthouse security.
The office's phone has rung unanswered after business hours Thursday. No officials from the office can be reached for comment.