4-es főúti sorozatgyilkos

The Main Road 4 Killer is the name given to an unidentified Hungarian serial killer who has been linked to at least three murders and one disappearance involving prostitutes along Main road 4 near Karcag from 2007 to 2010. The case was investigated both by the Hungarian police and the FBI, but to this day, nobody has been arrested for any of the crimes.

Murders The first victim was a 34-year-old prostitute from Püspökladány named Zoltánné V., who disappeared in either late August or early September 2007. Despite the fact that she had three children, she was not reported missing until a couple of months later, when the children's foster mother contacted the police. Zoltánné's fate remained a mystery until 2011, when her remains were finally located.

The second victim, 17-year-old Angéla Tyukodi, often prostituted herself at a rest stop near Karcag. On 22 May 2010, at around 9 pm, her boyfriend came with his bicycle to pick her up, but noticed her getting into a red or burgundy car that later headed towards Debrecen. Unlike the previous located victims, all of whom had been stabbed to death, Erzsébet was strangled.

In 2022, the reward money was withdrawn and the investigation suspended for all cases besides that of Piroska P. Due to this, if the killer is ever identified in these cases, they cannot be prosecuted. He escaped from prison in 1995 and remains an internationally wanted fugitive sought by both Interpol and Europol. A reward of 8 million Hungarian forints is offered for any information that could lead to his capture. For these crimes, he was convicted and sentenced to life imprisonment in 2015.

Antal K. Yet another suspect in the murder of Piroska P. was 46-year-old accountant Antal K., who was arrested for the 2018 murder of a prostitute in Mándok and the attempted murder of a store clerk in Nyíregyháza. While investigating him, authorities learned that Antal had previously been in a relationship with Piroska, leading them to consider him a possible suspect. However, investigators were unable to link him to any of the cases.