EVANSDALE, Iowa (AP) -

Authorities say they're still investigating whether there's any connection between a sex offender who committed suicide and the disappearance last year of two slain Evansdale cousins.

The Black Hawk County Sheriff's Office says investigators are still tracking the actions and whereabouts of Michael Klunder around the time that Elizabeth Collins and Lyric Cook were last seen. Elizabeth was 8 and Lyric was 10 when they rode their bikes in July and disappeared. Their bodies were discovered in December.

But authorities add that Klunder isn't their sole focus and they continue to follow up on other leads.

Police say Klunder kidnapped 15-year-old Kathlynn Shepard and her 12-year-old friend on May 20 in Dayton. The younger girl escaped and Klunder later hanged himself. Kathlynn remains missing.