A THIRD PERSON HAS NOW BEEN ARRESTED AS A RESULT OF A WEEKEND HOMICIDE IN DES MOINES.  35-YEAR OLD DUSTIN GOBEN FACES CHARGES OF FIRST-DEGREE MURDER AND FIRST-DEGREE ROBBERY ALONG WITH TWO OTHER DES MOINES MEN, JERMAINE BURTON AND ANTONIO ROSS.  DES MOINES POLICE DISCOVERED THE BODY OF 32-YEAR OLD SEAN CHAPMAN IN AN APARTMENT SUNDAY MORNING.  HE IS THE 10TH HOMICIDE VICTIM IN THE CAPITAL CITY SO FAR THIS YEAR.