BOSTON (CBS) –Police recovered 67 canisters of nitrous oxide near Fenway Park Friday. A Phish concert was taking place in the baseball park that night.
Officers found people using balloons filled with nitrous oxide to get high before the event, police said.
The balloons were then littered across the street and sidewalk.
Police confiscated the canisters which were “turned over to the Boston Fire Department’s Hazardous Materials Unit for additional processing.”