Authorities say Cummins, 25, was taken into custody Saturday, April 27, 2019, in the investigation into several bodies found in two homes near Westmoreland, Tenn.
Investigators found two more bodies at the first crime scene on Sunday, the bureau said.
A suspect in the killings of seven people in rural Tennessee has been shot and captured by police after an hours-long manhunt triggered by the discovery of the bodies in two separate homes, authorities say.
Sumner County is 25 miles northeast of Nashville on the central northern border with Kentucky.
The suspect's motive and relationship to the victims is still under investigation, the TBI said.
The TBI is working to notify next of kin, and haven't released the victim's names at this time.
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He was transported to a local hospital for treatment of his injuries sustained during the arrest.
Shortly after on Saturday, police learned of a second home on Luby Brown Road where another person was found dead.
Cummins was taken to a local hospital with non-life threatening injuries. A number of law enforcement agencies were searching for Cummins, saying he could be armed and unsafe.
Authorities say the suspect wanted in connection with five rural Tennessee slayings produced multiple weapons, prompting an officer to shoot him.
"TBI Agents and forensic scientists continue to gather relevant evidence and interviews in support of both the homicide investigations and the investigation into the officer-involved shooting", the TBI said.
In a creek bed approximately one mile from the first scene, the search plane appeared to locate the individual.