Dyer County Sheriff Jeff Box and his investigators worked late Wednesday evening in their search for Swift.
"We are actually rechecking some of the areas we were in and we are also broadening our search," said Box.
He added there has not been any new information in Swift's disappearance and they are still investigating the case as a missing person.
Swift, a 44-year-old mother of four was last seen early Sunday morning by her husband at their home on Willie Johnson Road after she reportedly returned from a Halloween party. Her white 2004 Nissan Murano was later found on Millsfield Highway near the intersection of Harness Road with a flat tire.
The TBI has the vehicle at their forensic lab in Nashville and it is being processed for any evidence.
Box, along with local, state and federal authorities have been searching for Swift, focusing mostly in the area around her residence and where her SUV was found in the Millsfield area.
Box stated they would start again early Thursday morning in their search and would probably have search dogs on the ground before daylight.
He is asking everyone wanting to help to remain patient while they perform their search and he would notify the public if a large-scale search needs to be performed.
Karen Johnson Swift is described as:
Height: 5' 5"
Weight 138 lbs.
Anyone who has had contact with Swift, recalls seeing anyone near her vehicle since her disappearance, or has information regarding her whereabouts is asked to contact the Dyer County Sheriff's Office at 731-285-2802.