When the Prevention Service of the Homicide Department received a call about the first murder, members of the
Judiciary Police (PJ) who arrived at the scene were shocked at the brutality of Maria Valentina's murder. The deceased was then brought to expert medical examiner Jose Sombreirero, who claimed to have never seen such a thing in 40,000 autopsies and 30 years of experience. In the subsequent investigation, it was revealed that the victim was either a prostitute or a drug addict, known from childhood as "Tina". Throughout 1992, numerous telephone calls and anonymous letters were received about the murder. Each was investigated, but all lacked solid evidence. On 27 January of the following year, the Ripper attacked again, this time killing Maria Fernanda, whose body was found by railway workers. An entire police brigade was mobilised, but nobody doubted that the perpetrator was the same: the body had been shredded, with the same organs removed and near the same area. This time, the killer had also cut off her breasts in the cabin at Entrecampos. In the investigation, it was revealed that, like the first victim, Fernanda was a prostitute. The Police opened the case on 3 January 1993, after the death of Maria Fernanda, investigating both her and Valentina's pasts. Six men worked 24 hours a day on the same case and sometimes even with the support of the drug trafficking department, which seconded employees from its nighttime surveillance brigade. "There were clues between Lisbon and
Cascais about several people relating to their past, but everything was informal, without enough evidence to arrest or even question anyone," lamented coordinator João de Sousa. The Police knew that the serial killer (or serial killers) would murder again and soon, but lacked any clues to charge anybody. On 15 March, the Ripper attacked and killed his third victim - Maria João. She had been mutilated in the same way as Fernanda and Valentina, but this time, all of her organs had been removed. Like the other victims, she too had either been a prostitute or a drug addict. However, there was little or no evidence found at the crime scene: no blood (except from the victims), hair, footprints, fingerprints, or glove material. The Police had some suspects, but no evidence against them. ==Ripper's profile==