Killing a couple because they were bullied by pets

It seems that an incident occurred that killed a couple because the pet was bullied. At the time of the incident, the suspect and the victim couple were both drunk with alcohol and may be a trouble caused by drinking.

Details are from the following.
Dog owner kills couple who teased his pet / MosNews.com

A suspect man (20 years old) was strolling a dog in the city of Orsia in the Republic of Belarus, where a couple who got drunk appeared and bullied a man's dog. A man who got angry with it also killed the victim men with a log that was nearby. Afterwards it was said that women were also killed with logs.

After that investigation, it seems that a man of suspect was also drunk with alcohol at the time of the incident. Also, it turned out that the man had a criminal record. The man said that "Affection for a four-legged friend" is stating that it caused the killing of the couple.