Dodge County Sheriff Todd Nehls says it will probably be Monday that his department positively identifies the body found in a shallow grave over the weekend.

Authorities believe it is the body of 31-year-old Haroon Khan, a UW-Milwaukee student who has been missing since last week.

The homicide investigation began when two teens told Watertown police a friend told them he killed someone. Officers began investigating and identified three suspects in the case.

Deputies say one of the suspects was a 20-year-old man from Watertown who shot and killed himself Friday night as authorities approached his home.

The sheriff's department says two other people are in custody and cooperating. They're a 20-year-old woman from Delafield and a 20-year-old male from Watertown.

(Copyright 2008 by The Associated Press. All Rights Reserved.)