Pichushkin confesses to most of the murders , unclear how many . Jury must decide whether 33-year-old supermarket worker is of sound mind . Alexander Pichushkin lured victims by inviting them to drink vodka , then hammering them to death . If convicted Alexander Pichushkin would be Moscow City 's most deadly serial killer since five years .
Alexander Pichushkin confesses to most of the murders , unclear how many . Jury must decide whether 33-year-old supermarket worker is of sound mind . Killer lured victims by inviting them to drink vodka , then hammering them to death . If convicted Pichushkin would be Russia 's most deadly serial killer since 1992 .