Connor Marshall has died after being found in a life-threatening condition outside a caravan at Trecco Bay Caravan Park , Porthcawl , on Sunday morning . Police have launched a murder investigation after a teenager died in hospital after being seriously assaulted at a Welsh caravan park . Connor Marshall , 18 , from Barry in south Wales , was found in a life-threatening condition at Trecco Bay Caravan Park , Porthcawl , in the early hours of Sunday . He was taken to the University Hospital of Wales in Cardiff and remained in intensive care for almost a week - but despite the best efforts of doctors he died today . South Wales Police say they have now launched a murder inquiry . The teenager and two friends went to a number of pubs in the Porthcawl area before they returned to the park at 1am . Connor was found seven hours later by early morning campers . Police made a caravan to caravan search at the park - one of the biggest in the UK and a favourite for families . Holidaymaker father-of-three Martin Hatley , from Swindon , said : ' I was shocked . As a dad to a teenage boy myself it 's terrible to hear about something like this . Detective Superintendent Paul Hurley said : 'Officers are continuing to conduct inquiries to establish the full circumstances of what happened . 'However , we would appeal to anyone who has any information that could assist us with our inquiries to contact us immediately . 'This was a brutal attack upon Connor with fatal consequences . ' I believe the person responsible may have shared information with friends , relatives or neighbours and I would urge anyone who has information or who may have been in the area of Trecco Bay between midnight and 7am on March 8 to contact the police . Connor Marshall was found unconscious at Trecco Bay Caravan Park , Porthcawl , on Sunday morning . Connor ( pictured ) and two friends went to a number of pubs in the Porthcawl area before they returned to the park at 1am . Connor was found unconscious seven hours later by people in the caravan park . ' I would like to reassure residents and visitors to Porthcawl and Trecco Bay caravan park that this appears to be an isolated incident on a well-managed site . 'Parkdean Trecco Bay Management are continuing to work closely with South Wales Police . 'Our thoughts are with Connor 's family and all those affected by this tragic incident . ' Earlier in the week , forensic specialists were seen searching for clues in the Sycamore Drive and Cedars area of Trecco Bay - one of the UK 's biggest caravan parks . A caravan park spokesman said their thoughts were with Connor 's family and that they are doing all they can to help the police with their investigation . Anyone able to help police with their inquiries should contact 01656 655555 , 101 or Crimestoppers on 0800 555111 , quoting the reference number 1500080214 . South Wales Police announced they were launching a murder investigation after Connor died today .
Connor Marshall , 18 , died after being seriously assaulted in a caravan park . He was found unconscious in the early hours following a night out . The teenager had been drinking and taken drugs before he went to sleep on his own at around 2am last Saturday. South Wales Police say they have now launched a murder investigation .