CHARLOTTESVILLE, Va. (CBS19) -- Two Albemarle County siblings are no longer charged in the disappearance and death of Waynesboro Police Reserve Captain Kevin Wayne Quick.
On Tuesday, Louisa County's Commonwealth's Attorney Rusty McGuire dropped the charges in court, but he hasn't said why.
Twenty-year-old Mersadies Shelton and her 18-year-old brother Daniel Mathis were both accused of illegally possessing Quick's SUV after he disappeared.
Quick's vehicle was seen leaving the scene of an alleged shooting and robbery in Louisa County on Super Bowl Sunday.
The siblings had multiple felony charges related to that incident, but the charge involving Quick's SUV was dropped during a preliminary hearing Tuesday afternoon.
"The cases involving the suspects remain under investigation," Louisa County Commonwealth's Attorney Rusty McGuire told reporters outside the courthouse. He didn't offer any other explanation.
Newsplex legal analyst Scott Goodman says there are a few reasons the charges could have been dropped. The Commonwealth has to prove the siblings knew they were in a stolen vehicle, which can be difficult to do.
Another possibility is that the siblings may have given up information useful to the case.
"I think that the Commonwealth wanted to put the squeeze on these two individuals by lodging charges against them," Goodman said. "It could very well be that they did cooperate fully and perhaps they have given information and in consideration for their help, these charges could have been dropped."
Quick went missing after leaving Afton to head to Albemarle County on January 31st.
His body was found less than a week later in Goochland County.
In all, six suspects have been tied to the case, but nobody has been charged with Quick's death.
The siblings were the first people charged in connection with Quick's investigation.
Shelton and Mathis will continue to be held on charges related to the alleged robbery at the Louisa County home.
A grand jury is scheduled to meet May 5 to hear those charges.