SOUTH SALT LAKE -- Family and friends of a slain Utah Jazz executive's mother-in-law are offering a $50,000 reward for information leading to her killer's arrest, authorities said Monday.
Sherry Black, 64, was found stabbed to death in her South Salt Lake book shop and billiards supply store in November 2010. She is the mother-in-law of Utah Jazz executive Greg Miller.
Four months after the killing, authorities still have no suspects and no motive.
South Salt Lake Police Lt. Dwayne Ruth said Monday investigators hoped the reward might lead to new information.
Ruth said police found the killer's blood at the murder scene, and that DNA tests confirmed the killer is male. It was the first time authorities had publicly released the information.
"Based on evidence at the crime scene, we know the suspect was injured, that his hand was the injured part of his body," Ruth said. "The fact that we have DNA makes it very simple for us to eliminate suspects in this case."
Ruth would not elaborate on why the information was just now being released.
In January, police partnered with the "America's Most Wanted" television show in hopes of finding suspects or at least uncovering a motive, but tips proved fruitless.
Black's family has also launched a website -- SherryBlackInfo.com -- to collect information about the case.
"The person who took her away from our family needs to be caught and put away so they don't hurt anyone else," Black's daughter, Heidi Miller, said at a news conference Monday. "By offering this reward, we hope to raise awareness of this crime and the investigation and learn new information that may help us find and bring to justice the person who took her away from us."