South Carolina Town Lives in Fear While Deputies Search for Killer of 5

Police are investigating a possible connection between a shooting in North Carolina and the spree killings that have terrorized a small South Carolina town.

A Gaston County, N.C. police officer responding to a burglary call shot and killed a man early Monday morning. That man's car — an old Ford Explorer — was similar to the gray or champagne older-model Explorer allegedly used by the South Carolina killer, Charlotte Observer reported.

The man killed has not been identified.

"There is fear in this community," Gaffney, S.C. City Administrator James Taylor told FOX News Monday.

He said police are "working very hard to chase down all leads" to find the man they believe killed five people in a week, and encouraged people to be aware of their surrounds.

"Lock your doors, do not allow strangers to come in, call and check on relatives and friends," Taylor told FOX of the advice he is giving residents. "Just be watchful and report anything you see."

Clint Van Zandt, a former FBI profiler who is not involved in the case told The Greenville News that something significant, like losing a job or breaking up with a significant other, may have happened in killer's life to set off the killings.

"The bottom line is this guy is extremely dangerous, and law enforcement needs to find him because he is obviously capable of killing,” Van Zandt told the newspaper. “And he is very capable of killing again.”

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A peach farmer was killed June 27. An elderly woman and her daughter were shot dead last Wednesday. Then a father and his 15-year-old daughter died after being shot Thursday.

Van Zandt stopped short of calling the man a "serial killer" and instead characterized him as a "spree killer."

A spree killer, he explained to The Greenville News, "moves from site-to-site and place-to-place in a relatively short period of time.”

In contrast, a serial killer often has a cooling-off period between killings, he told the newspaper.

Hundreds of people thronged funeral services Sunday for the mother and daughter.

The crime spree terrorizing Cherokee County forced many people to curtail Fourth of July festivities, and put neighboring counties on alert.

"Until this guy is put in jail, we don't know what he's going to do,” Spartanburg County Sheriff Chuck Wright told The Greenville News.

Wright said he assigned eight deputies to help in the manhunt.

The Associated Press contributed to this report.

Click here to read more on this story from The Greenville News.

Click here to read more on this story from the Charlotte Observer.