Two more people have been arrested in connection with the murders of late Associate Professor Pierre Colas and his sister at his East Nashville home in August.

According to Metro Police booking, Lavonta Churchwell, 19, and Nathaniel Carson, 29, were taken into custody late Friday night. Churchwell, who faces six charges and a bond set at $210,000, has a court date on Feb. 26. Carson faces 11 charges and bond set at $250,000 and no court date as of press time.

The Tennessean reports that the two are the fifth and sixth suspects arrested in the case, and are being indicted on murder, robbery, identity theft and forgery charges.

Colas, who was an associate professor of anthropology, and his sister Marie were shot during a robbery at Colas' home. Colas died that day, while his sister, who was visiting from Switzerland, died at the Vanderbilt University Medical Center four days later.

Four suspects were charged in August with double criminal homicide after a police investigation led to the discovery of several high-ticket items being purchased from local businesses with Colas' identification. The four suspects were seen smiling and laughing on store surveillance tapes. Police were able to make the arrest based on a description of the car used during the purchases. Suspects George Eugene Cody, 29, and Gennyfer Dawn Hutcherson, 35, live on West Sharpe Avenue, two blocks away from Colas' home. Suspects Thomas Andrew Reed, 20, and Michael Shane Holloway, 22, were there with a group that sells magazines and were staying at the La Quinta Inn. The four know each other through a relative.

Colas joined the Vanderbilt faculty in 2006 as an associate professor of anthropology and a scholar of classic Mayan culture. He specialized in the ethnography of the Yucatec Maya of Belize and cave archeology projects. He was also fluent in six languages and researched hieroglyphic characters as a means of understanding the political and religious structure of Mayan society. Colas earned his Ph.D. at the University of Bonn and the University of Cologne in Germany.

Judy Wang contributed reporting to this article.