Brock Husted and his pregnant wife, Davina, were stabbed to death on May 20 by a man wearing a motorcycle helmet.
The couple's 9-year-old son and 11-year-old daughter ran to a neighbor's house to call 911. The children were not injured.
Sheriff's department investigators say they are still sifting through a lot of evidence, but with the killer still at large, they say they don't want to release any more information.
According to a newspaper report, investigators have served several search warrants in the case, but no possible suspects have been named.
Funeral services for the Husted couple will be held Saturday.