SURRY, Va. — Federal law enforcement officials descended on a home owned by Michael Vick on Thursday armed with a search warrant that suggests they’re taking over an investigation into the Falcons quarterback’s possible involvement in dogfighting.

    More than a dozen vehicles went to the home early in the afternoon and investigators searched inside before turning their attention to the area where officials found dozens of dogs in late April and evidence that suggested the home was involved in a dogfighting operation.

    Surry County officials had secured a search warrant in late May based on an informant’s information to look for as many as 30 dog carcasses buried on the property. The warrant never was executed because Commonwealth’s Attorney Gerald G. Poindexter said he had issues with the way it was worded.

    That search warrant expired Thursday. ‘‘What is foreign to me is the federal government getting into a dogfighting case,’’ Poindexter said.

    ‘‘I know it’s been done, but what’s driving this? Is it this boy’s celebrity? Would they have done this if it wasn’t Michael Vick?’’

    Poindexter said he was ‘‘absolutely floored’’ that federal officials got involved, and that he believes he and Sheriff Harold D. Brown handled the investigation properly. ‘‘Apparently these people want it,’’ Poindexter said.

    ‘‘They want it, and I don’t believe they want it because of the serious criminal consequences involved. ... They want it because Michael Vick may be involved.’’

    Poindexter said he found out about a sealed search warrant filed in the U.S. Attorney’s office about the time federal investigators executed it Thursday. State police assisted investigators from the U.S. Department of Agriculture and the U.S. Attorney’s office in executing the warrant, Virginia State Police Sgt. D.S. Carr said, declining to comment further.

    The U.S. Attorney’s office would not confirm a search warrant was filed.