Police in Vietnam took hair and blood samples on Sunday to identify the 39 people who died in a truck trailer in Essex, east of London.<br />According to Reuters, fathers of missing Vietnamese individuals said local police took their samples.<br />The fathers added they lost contact with children after they received messages saying things like they were running out of air.<br />Police initially believed the deceased were Chinese, but now up to 25 victims are thought to have come from the same farming village in Vietnam.<br />Chinese and Vietnamese authorities say they are working closely with British police.<br />