Eight teens have been charged with murder after a young man was assaulted at a party near Brisbane. Photo: HANDOUT/QUEENSLAND POLICEA "preconceived plan" to cause harm at a party has resulted in a young man's death and murder charges for eight teenagers, police say. ''More than 80 police were involved in the execution of 14 search warrants across three police districts,'' Det Galpin said. ''It is an ongoing investigation, so that is a possibility," Det Galpin said. Police are warning more arrests are possible in relation to the death of a man at a party.