Robert L. Phipps, 49, was killed on October 23, 2008, at 1032 Caldwell Place in Columbus, Ohio. An argument at that address escalated and Phipps suffered fatal head trauma. Reports say the circumstances of the altercation remain vague.

No suspects have been publicly identified or arrested in connection with the killing. The Columbus Police Department and the Ohio Attorney General’s Office are seeking tips, and the Ohio Bureau of Criminal Investigation can receive information from anyone who believes they have relevant details. Even small observations from that night could be important to investigators and to Phipps’s family.

Did anyone see or hear anything near 1032 Caldwell Place on the night of October 23, 2008, or have other information that could help explain what happened?