 Because of the incident with the gothic man, he felt pain during the sexual act, and the impossibility of pleasure is suspect of being the reason for Pereira's murder spree.Prior to the investigation of the murders, Pereira had already been summoned to testify with the DHPP to clarify the use of a check sheet in the name of Isadora Fraenkel, which he had used for the purchase of a helmet; having alleged the use of the check with Fraenkel's consent (she was not his girlfriend, but rather a randomly chosen victim), he was released soon after.At the time of the murders, Pereira worked as a motoboy at a company near the police station that investigated the crimes.