The suspect — an avid computer gamer identified only as Artyom, 36 — has been detained on suspicion of murder, according to the news outlet.
He is suspected of using Antontseva’s thumb to access her cellphone to send since-deleted messages saying she was sick and unable to go to work.
Investigators believe he may have owed Antontseva money — leading to an argument about repaying it, the Sun reported.
That’s some pretty serious gaming.