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Cold-case investigators recently took a new look at DNA evidence from a deadly shooting and sexual assault 17 years ago, and a 43-year-old man now faces charges in the case, an official said Wednesday.

Gregory D. Tamplin, 43, is charged with one count of first-degree murder, two counts of sexual assault, one count of first-degree burglary and one count of kidnapping, according to a Tucson Police Department news release.

He was indicted earlier this month in the the slaying of 21-year-old Ronald Taylor on Nov. 13, 1990, the release says.

On that day, Tamplin forced his way into an apartment shared by Taylor and an 18-year-old woman, said Deputy County Attorney William McCollum. The intruder shot Taylor more than three times and raped the woman, according to Star archives.

Evidence collected from the woman, a piece of carpet and the robe the woman was wearing provided a break in the 17-year-old case, McCollum said.

Those pieces of evidence were submitted to the police crime laboratory, and an analyst was able to isolate DNA, according to the news release. The DNA was uploaded into the Combined DNA Index System — also known as CODIS — and a match was found, the release says.

"The science has gotten so much better" in the time since detectives began investigating the homicide and sexual assault, McCollum said.

CODIS is a nationwide database of DNA, McCollum said. The reason the DNA is collected varies from state to state, he said. It could be from a court order after a person is convicted of a crime or during an investigation.

McCollum would not say why Tamplin's DNA was already in the system.

According to the Arizona Department of Corrections Web site, though, he is already serving time in prison for being convicted of crimes including sexual assault, second-degree burglary, aggravated robbery and theft.