Officers from multiple law enforcement agencies descended Wednesday evening on San Francisco's Jefferson Square Park, where rampant drug use earned it the name "Zombie Park," arresting dozens of people.

A multi-agency law enforcement operation was carried out in the overnight hours into Thursday morning at a San Francisco park. San Francisco police say the bust at Jefferson Square Park is part of an ongoing strategy to crack down on open-air drug markets.

Dozens of people were arrested in a massive bust at Jefferson Square Park in San Francisco, which had become known as “Zombie Park” due to drug sales and illegal vending. Lauren Toms reports.