A police officer attends the scene in Victoria Crescent, Jersey (Pic: PA) A murder investigation is under way after a crazed knifeman went on the rampage on Jersey killing six people, including three young children. Advertisement >> The attack spilled from a flat and into the street yesterday afternoon in an area described by a detective as “one of the safest places in the western world”. The victims were two women, one man and three young children believed to be Jersey residents but whose identities have not been disclosed. Locals said they were all members of the same family but police are yet to confirm what relationship they may have. A 30-year-old man is under arrest at Jersey General Hospital where he is in a serious but stable condition after undergoing surgery. Inquiries were continuing to establish a motive but it is understood no-one else was being sought over the attacks, which shocked the close knit community. Forensic officers attend the scene in Victoria Crescent Detective Superintendent Stewart Gull, leading the inquiry for States of Jersey Police, said: “It goes without saying that when you are dealing with multiple deaths, of men and women and, in particular young children, you would be inhuman not to be shaken yourself.” Speaking at a news conference yesterday, he added: “Jersey is an incredibly safe island, probably one of the safest places in the western world and incidents of this nature are an extremely rare occurrence, particularly in Jersey and across the UK.” Mr Gull, who led the Ipswich serial murders inquiry in 2006, said it was a “challenging and quite complex” case for emergency teams to deal with but praised their response. The alarm was raised just after 3pm by a member of the public reporting a multiple stabbing at a flat at Victoria Crescent, Upper Midvale Road, St Helier. Five people were initially confirmed dead but a sixth victim – a woman – was later also pronounced dead at Jersey General Hospital. The hospital’s emergency department was closed for more than two hours due to the volume of victims being admitted, and staff were called in on days off to help stretched colleagues. At the scene, witness Andre Thorpe said: “I saw police come running out with a child, it was a small child. I just saw the legs. They went off in an ambulance. “When the paramedic came back her shirt was covered in blood. We have quick response ambulance cars and two pulled up, grabbed a kit and ran inside.” Mr Thorpe also said he saw police taking a dog round various driveways. He added that the area where the incident happened was quite secluded and not on a main road. He said: “You have to drive up a dead end to get in, you would not happen to be passing. I was in the area collecting a friend’s car. “I was first aware something was happening when I saw people looking out for the ambulances as I walked up the road.” Mr Thorpe said he believed all the victims were members of the same family and a neighbour thought they were Polish but police were unable to confirm this. Mr Gull told the BBC that he believed the previous murder on Jersey was in 2004. A major incident room has been set up at police headquarters in St Helier and a number of witnesses have come forward to help officers. Speaking last night, Mr Gull said: “Clearly this complex investigation is in its very early stages as we try to establish exactly what happened. “We are appealing to anyone who may have any information to contact us. “We are mindful, too, of the impact of any such serious and tragic incident on the local community, and we have police officers in the area to support the investigation and local people.” Angela Body, director of operations at the general hospital, praised staff who came in on days off to deal with the aftermath of the attacks. She said: “The teamwork spanned across many service areas including the ambulance, medical, nursing and support staff who all helped with a serious and unusual situation. “As ever, staff worked quickly and in a professional way to help those who were brought in for treatment and care.” Anyone with information has been asked to contact States of Jersey Police on 01534 612612.