been torn apart. police say they believe ava white was in an altercation with a group of youths at the scene which resulted in her receiving catastrophic injuries. a postmortem will be held to establish the exact cause of death. as you said, four teenagers from the toxteth area of liverpool have been arrested on suspicion of murder. they are 13, two aged 14, one aged 15. this happened at a time when the city centre in liverpool was very busy. there had been a christmas lights switch on before it happened. police think there may have been a load of witnesses. they want those people, anyone who saw anything that might help the inquiry, to come forward so they can get what they call justice for ava white. forward so they can get what they calljustice for ava white.- calljustice for ava white. andy, thank you- a 24 year old man has been charged with murder in connection to the disappearance of 18 year old bobbi anne mcleod. cody ackland from the southway area of plymouth, has been charge