GREENBELT, Md. (AP) — A federal grand jury in Maryland has indicted a Delaware man in what prosecutors say is a murder-for-hire plot that crossed state lines. Between Sept. 3 and Sept. 12, Mack met three times with a confidential informant and undercover officer in Queenstown and Centreville, Maryland, and at the Dover Downs Casino to pay $1,000 for two murders, according to an affidavit written by Jeremy Horbert, a special agent with the U.S.