Roberto Carlos Caballero-Menjivar, 25, was shot and killed on March 18, 2008, in Houston, Texas. The shooting happened about 10:40 a.m. on the 3000 block of Fuqua.

Details about what led to the slaying remain unclear; the Houston Police Department has not identified a motive. The investigation is still open and no suspects have been publicly named or arrested.

Does anyone who lived or worked near the 3000 block of Fuqua in March 2008 recall seeing or hearing anything that could help investigators?