Here's one from Huntington Beach, California, this very week:

An elderly man from Lake Elsinore has been identified as the suspect in Monday's fatal shooting of a Huntington Beach urologist in Newport Beach, police said Tuesday.

Stanwood Fred Elkus, a 75-year-old barber, was arrested shortly after the slaying inside a Hoag medical building, according to Newport Beach police spokeswoman Kathy Lowe. The victim was Dr. Ronald Gilbert of Huntington Beach, who would have celebrated his 53rd birthday on Wednesday, according to Orange County sheriff's spokesman Jim Amormino. An autopsy is expected to be performed Tuesday, Amormino said.

Motive?

The only clue:

Neighbor Rick Gower, 52, knew Elkus as a friendly man who was often seen riding his bike to the grocery story. However, Elkus's prostate problems were often a topic of conversation.

"He talked about it a lot. He would always say, 'Don't ever get a prostate operation because it will screw your life up.'