Fletcher arrived at his Charles Town home about 10 p.m., Boober said.
"I'm personally amazed he is here this quickly," Boober said.
Fletcher made a visit to the sheriff's department Thursday and his breathing seemed to be labored, Boober said.
Fletcher seemed to be overwhelmed by everyone wanting to visit with him, Boober said.
Fletcher first was expected to be released from Washington Hospital Center on Tuesday but could not be because doctors wanted to conduct more tests to make sure he was ready for release, Boober said.
Fletcher was at Washington Hospital Center since Feb. 19, when he was shot three times inside a house at 74 Orchard Drive in the Orchard Hills subdivision in Ranson, W.Va.
Fletcher was shot in the upper torso and his lungs were damaged in the incident, officials said.
Two police officers and a paramedic rescued Fletcher from the house.
A man in the house identified as Dorsey Cox, 37, would not come out of the house, resulting in a six-hour standoff with police.
Cox died following the standoff, although is not clear whether he died of a self-inflicted gunshot wound or from gunshots fired by a police special operations team, police said.
Fletcher said he will have physical therapy about three times a week in Winchester, Va. Officials say it is unclear how long it might be before Fletcher is able to return to work.
A fund has been established to collect money to help Fletcher pay his medical expenses.
Jefferson County Commission President Frances Morgan mentioned the fund during the commission meeting Thursday and said it seems to be receiving many contributions.