Lilia Valutyte, a Lithuanian national, was found dead after being stabbed on Fountain Lane in Boston at about 6.20pm. of Thursday. Lincolnshire Police released four CCTV images of the man and warned anyone who sees him not to approach but to call 999 immediately. Two other people arrested earlier were released without further action, the force said. Chief Superintendent Martin Parker said: “Our officers are working around the clock on this investigation and the public’s help could prove crucial. “These are very clear images of a man we want to speak to, so I would urge anyone with information to contact us. If you see him, do not approach him but call 999 immediately. “This is a particularly tragic case and I would like to reassure the public that we have huge resources dedicated to the investigation. “We continue to provide support to Lilia’s family as they grieve this unimaginable loss.” Image: Lilia Valutyte Lilia’s parents are supported by specially trained officers. Matt Workman, the Conservative MP for Boston and Skegness, said he had been in touch with the police minister to ensure there was national help to investigate the murder. On Thursday night, he tweeted: “Deeply shocking news in Boston this afternoon. “I have spoken to senior officers in the area and I am very grateful for the work of all the emergency services. “I have also been in contact with Policing Minister Tom Pursglove to ensure that any national assistance that could be useful is made available as soon as possible.” Anyone with information should call 101 quoting incident 419 of July 28.