VICTORVILLE, Calif.—A San Bernardino County man who stabbed his wife 13 times and left her body in a bathtub nearly two decades ago has been sentenced.

A judge in Victorville Friday sentenced Gustavo Perez to 15 years to life in state prison.

Perez, 46, of Sugarloaf, was convicted last fall of second-degree murder in the August 1992 killing of his wife, Gina.

Perez had claimed to find her body after returning home. He was arrested after cold-case investigators reopened the case in 2006.

Perez's defense lawyer argued at trial that the wife's boyfriend may have been the killer. But that man testified that he loved her and had asked her to marry him.