COLUMBIA — The South Carolina serial killer who terrorized a small community was well-known to authorities as a bully, so intimidating that a scared man once refused to testify against him, and extortion charges were thrown out.

The career criminal, Patrick Burris, had repeated run-ins with police for stealing and writing bad checks, and authorities said Tuesday they weren't surprised that his crimes escalated.

They said Burris, paroled in April after serving eight years in a North Carolina prison, should not have been released.

Burris, 41, shot five people to death in a 10-mile area of rural Gaffney in the span of six days last week, police said.

He was fatally shot Monday by officers investigating a burglary complaint at a home in Gastonia, N.C., 30 miles from where the killing spree started.

Ballistics from a gun found with Burris linked him to the South Carolina slayings.

"He always had a violent streak," Rockingham County Sheriff Sam

Page said. "He was very intimidating and very threatening from his appearance: He was at least 6-5 and 250 pounds. You didn't want to mess with him."

It's unclear why Burris began his killing spree.

Police were still piecing together details of his life. Records show that he had lived in Rockingham County, N.C., a rural county near the Virginia border, since the late 1980s, but he also spent a lot of time behind bars.

He was arrested more than 30 times in North Carolina alone, the first time in 1989 for blackmail.

He also had convictions in Florida, Virginia, West Virginia and Maryland.

Most of his convictions in North Carolina involved stealing from homes and businesses and writing bad checks, records show.

But those cases don't reveal his true character, Page said.

In 1996, Page, then a detective at the Eden Police Department in north-central North Carolina, arrested Burris for extortion.

He was accused of forcing an elderly man to write a check and cash it at the bank. But the charges were dropped when the man refused to testify.

"He intimidated that man. He was scared. There was no way he was going to testify," Page said.

In another case, Burris was charged with robbery and assault in 2000 in Eden, but those charges were dropped when the man "backed out and refused to show up for court," Eden Police Chief Reece Pyrtle Jr. said.

"You didn't want to cross him," Pyrtle said of Burris. "He had that scowl."

South Carolina Law Enforcement Division Chief Reggie Lloyd, a former judge and federal prosecutor, said more should be done to keep habitual offenders like Burris behind bars.

"At some point, either prosecutors or judges did not believe that (his crimes) warranted more time. ... Our entire system has really got to get serious about how we deal with these types of offenders," Lloyd said.

North Carolina Corrections Department officials were looking for Burris when he was shot because he had violated his parole.

Page said authorities did everything they could.

"Every officer along the way did his job," he said. "But we have 37,000 prisoners committed to prison in North Carolina, and when those prisons get full, our jails start backing up.

"I run a jail. I know they can't put everyone in jail. They have alternative programs to incarceration. But there are some that just need to be in jail, and this is one who just needed to be in jail."

The Gaffney killings began when peach farmer Kline Cash, 63, was shot down on June 27.

Four days later, 83-year-old Hazel Linder and her daughter, 50-year-old Gena Linder Parker, were found bound and shot in the older woman's home.

The next day, Stephen Tyler and his 15-year-old daughter Abby were found shot in their family's furniture store. Abby died on Saturday.

The investigation isn't over. Gaffney Police Chief Richard Turner said they were tracing the suspect's activities to try to determine if he has killed others.

"We are all asking why. Why here? Why these individuals? Why these victims?" Turner said.

"That's something that this guy took with him to his grave."