Visitors and staff safely exited after being asked to shelter in place Tuesday afternoon at Brookfield Zoo while authorities investigated a potential threat.
About 7:30 p.m., an “all-clear” was given, according to a statement from the Chicago Zoological Society. Zoo officials said they made the request to shelter in place “out of abundance of caution” after receiving notice of a potential threat at the 216-acre zoological park in the west suburb.
