Police charge four people after an investigation into an alleged theft of a delivery truck in Willetton, south of Perth. According to reports, the incident involves a delivery vehicle taken from outside a home while a driver is making a scheduled delivery. The investigation identifies four suspects and charges them in connection with the alleged theft. One outlet reports the truck is carrying about $50,000 worth of goods at the time it is allegedly taken. The charges relate to the alleged removal of the vehicle and its contents during the delivery. The case is being handled through the criminal justice system, with the individuals set to face court in relation to the alleged offences. Further details about the specific charges, the timeline of the incident, and the status of the goods and vehicle are not included in the provided reports. The matter is ongoing.