A 22-year-old man has been arrested on suspicion of murder after nine-year-old Lillia Valutyte was stabbed the death in Boston, Lincolnshire, on Thursday.
Lincolnshire Police have confirmed that the 22-year-old suspect was held in the Boston Central Park area at approximately 2.45pm on Saturday and is now in custody.
Authorities said that the progress in the investigation into Lillia's murder was made through a "combination of intelligence and information supplied by several members of the public." Police confirmed that they are not looking for anyone else in connection with the murder of Lillia Valutyte.
The investigation remains in progress and there will "continue to be a significant police presence in the town", Lincolnshire Police said. They added that they are still encouraging anyone with any information to get in contact with them.
Chief Superintendent Martyn Parker, said: "We are in a very sensitive stage of our investigation."
Earlier, police had released four CCTV images of a suspect taken five minutes prior to Lillia being found and warned members of the public to call 999 immediately if they spotted him and not to approach the man.
Lillia was found on Fountain Lane at around 6.20pm on Thursday, with a fatal stab wound.
The 9-year-old had been playing with her younger sister on the street just outside the office where her mother was working.
Local residents described how a toy pram and a hula hoop that the girls had been playing with were left at the scene.
Jurate Matulioniene, a friend of the family and chairwoman of the Boston Lithuanian Community, said how much Lillia loved dancing. She told The Times: "Lillia was a beautiful angel, she was quite quiet and loved dancing. "The family used to come to all of our community events and they would always stay late to help clear up. "I have spoken to the mum and asked for her account details because we want to do a fundraiser but she would not accept it."