A Round Rock woman remains behind bars in connection to her husband's shooting death.

Nancy Khan is charged with tampering with evidence. Her husband, Ali Kahn, was found shot in his Round Rock home over the weekend.  

The Williamson County Sheriff's office gave an update on the case Wednesday.   At this point, there is not much additional information, but investigators did talk about the evidence found at the scene.

"There were items missing from the crime scene that were found in Mrs. Khan’s vehicle,” Fred Thomas with the Williamson County Sheriff’s Office said. “There were items at the crime scene that appear to be placed there after the homicide was committed." 

Investigators say Kahn is not talking to law enforcement about the case. She is in custody the Williamson County Jail on a $1 million bond.