Patrick Hansen, 57, was found dead from multiple stab wounds in his Houston residence on January 25, 2008. The Houston Police Department investigated the homicide but the case went cold after investigators ran out of significant leads and witnesses.

The investigation has remained open. Detectives periodically review the evidence, and the Houston Police Department’s Cold Case Squad later took over the probe to search for new suspects or previously overlooked clues. Authorities have repeatedly appealed to the public for tips, but no major breakthroughs have been reported.

Anyone who knew Patrick, was in his neighborhood on January 25, 2008, or who has information that could help investigators is asked to come forward.