A Brazilian man, Sailson Jose das Gracas has confessed to murdering more than 40 people for pleasure and an adrenaline rush.
Das Gracas, 26, who has been described as a psychopath by police, said he preferred to kill white women, whom he allegedly strangled.
He told reporters at a police station that he would often watch his victims for months before making his move and that he also operated as a killer for hire, where he would use a gun rather than strangle his victims.
Police arrested him shortly after he allegedly stabbed a woman to death in the Rio de Janeiro suburb of Nova Iguacu.
Das Gracas said he killed 37 women, three men and a two-year-old over a nine-year spree, explaining he took the child’s life because he feared the youngster would cry and attract neighbours’ attention.
“I don’t feel remorse. If I go to jail for 10, 15, 20 years, then as soon as I get out I’ll do the same thing all over again,” he added.