Police in the republic's capital of Kazan detained the karate enthusiast after he allegedly used his skills to kill a 61-year-old woman and her 25-year-old son. The woman's 58-year-old husband was also hospitalized with serious injuries, the Respublika Tatarstan paper said.
The attack took place on Tuesday evening after the man discovered that his wife, along with many other residents, had been infected with head lice. Residents of the building share common facilities.
Investigators said the family, according to statements by neighbors, "drank constantly and were covered in lice."
"No one liked them and no one talked to them," Eduard Abdullin told the Vesti TV news channel, adding that the karate enthusiast, reported to have practiced the martial art for the past seven years, had been drinking heavily before the attack.
"The detained decided to teach his neighbors a lesson," Abdullin said, adding that the man had "used his karate skills" in the attack.
