Jailed for life: Czech murderer who committed string of UK sex attacks He said: "I regard you as a very, very dangerous man." He said Scuka was "unwilling to control his sexual urges and was a grave danger to women." The judge said: "If there is ever such a day you are released in this country you should be deported. I have no doubt that the public will be terribly alarmed. It seems to me the case that even with your convictions for murder and assaults you were free to enjoy the same freedom of movement as any other European citizen. After the hearing, Det Sgt Ian Harding who led a cold case review team which snared Scuka by fibres from his clothing said: "It is a concern that people of this nature move freely about the EU without any restriction. This man has been living in Sheffield since 2009 and we were not even aware of his presence. Scuka first struck in March, 2010 as a 51-year-old grandmother walked her two-and-half year old granddaughter home in a pram at Sheffield Lane Top. He approached the woman from behind and put his hand between her legs while making "sexual grunting noises," said prosecutor Mike Smith. His victim turned round and swore at Scuka who fled. The second attack happened on April 14 when a 23-year-old was approached by Scuka who pretended to be jogging as she walked alongside the River Don. His victim said he appeared to be wanting directions but he then grabbed her and tried to push her into nearby undergrowth and said: "I give you 30 quid." Two hours later Scuka raped his third victim as she walked her dog on playing fields after work. Scuka pushed her to the ground, ripped off her boots, trousers and underwear before raping her at knifepoint. The final attack was on May 17, 2011 when a student in her 20s was walking through a park in Firth Park. Scuka grabbed her from behind and said "let's have sex" but she managed to break free and escape as he tried to rip off her coat. He was arrested minutes later at his home half a mile away in Hinde Street, Page Hall. Scuka, who spoke through an interpreter in court, denied three of the acts and claimed a fourth was consensual. He claimed the fibres had transferred onto his victim's coat after a gypsy borrowed his top for a few hours.