UPDATE 1-Slovakia charges man with ordering journalist's murder

Slovakia has charged a man with ordering the murder last year of investigative journalist Jan Kuciak and his fiancee, prosecutors said on Thursday, a case that triggered mass protests and the prime minister's resignation.

Special prosecutors named the suspect only as Marian K. during a televised news conference that marked a major step forward in the case that rocked the central European state. Police arrested four other people in September, including a woman identified only by her initials AZ, who was also charged with ordering Kuciak's killing.

(Reporting by Tatiana Jancarikova and Jason Hovet Editing by Mark Heinrich )