Australian police on Tuesday said they arrested more than 1,600 people and seized drugs worth $93 million Australian ($63 million US) as part of a week-long action targeting illicit drug and organized crime activity. The joint action, named Operation Vitreus, ran from August 19 to August 23. Its aim was to reduce the availability of illicit drugs across Australia, a joint statement by state and federal authorities said. A total of 1,611 people were arrested on drug related charges across Australia. Authorities also seized nearly 1,400 kilograms of drugs and more than 2,500 cannabis plants, wit…