Atlanta police have made an arrest in the murder of retired American Cancer Society researcher Eugenia Calle. From the Atlanta Journal Constitution:

Jamal Thompson, 22, had posed as a potential buyer of Eugenia Calle’s condo to gain entry to her 20th-floor home at the upscale Aqua complex on 10th Street, Atlanta police Lt. Keith Meadows said.

Police were able to track Thompson because, criminal genius that he was, he allegedly used Dr. Calle’s credit cards in Southwest Atlanta. Thompson not only faces a murder rap, he has also been hit with robbery and theft-related charges. 

Atlanta NBC affiliate WXIA gives the alleged killer’s name as “Shamel Thompson.”