Brown and Surry County Commonwealth's Attorney Gerald G. Poindexter told WAVY-TV of Portsmouth, Va., there is evidence linking Vick to dogfighting, which is a felony in Virginia.
"We have informants," Poindexter told the station in an interview Wednesday. "We have people who are volunteering to make those allegations."
The case began April 25 when police conducting a drug investigation raided the house Vick owned in rural Surry County and found dozens of dogs. They also found items associated with dog fighting, including a "pry bar" used to pry apart a dog's jaws.
No charges have been filed in the case.
Vick, a registered dog breeder, has blamed relatives for taking advantage of his generosity and insisted he's rarely at the house -- even though he's the owner. He has since sold the home.
Poindexter also told WAVY-TV that he has not yet executed a search warrant on the property because he didn't like the language of the warrant.