The preliminary hearing for a man accused of murdering a longtime Rolando veterinary in June of 2022 was held Thursday morning. 38-year-old Patrick O'Brien faces a first degree murder charge in the death of 88-year-old Dr. Clark Kelly. Prosecutors say O'Brien broke into Boulevard Animal Clinic. Investigators suspect Dr. Kelly interrupted a burglary in progress. Many of Dr. Kelly's loved ones sat in the courtroom. His widow, Elsie Kelly, took the stand first. She had an emotional support dog at her side during her testimony. She grew emotional. She testified the couple had lived in a home on the same property as the clinic for the past 25 years. They had celebrated their 59th wedding anniversary the say day he died. She said she was home when her husband was attacked. MORE: https://www.cbs8.com/article/news/local/hearing-underway-for-man-charged-with-killing-rolando-vet/509-8535df65-6b2d-48ba-a122-c44a4053aa86