Charleston police and firefighters closed off the intersection of Church and Queen streets for almost three hours Monday afternoon as they examined a suspicious substance that turned out to be non-dairy creamer.

The caution tape started coming down shortly after 4 p.m., as Mike Kunitzer told reporters that officials had identified the light-colored powder.

It marked the second hazardous scare in the historic district in three weeks. In early July, officials closed off East Bay Street before determining a mystery powder in letters that arrived at the Historic Charleston Foundation was baking powder.

Monday’s scare injured no one but inconvenienced a few, including Glenda Coffman, who was vacationing here from Hot Springs, Ark.

She said she walked several blocks out of her way to get from her hotel to the waterfront. But the non-dairy scare didn’t dilute her mood. “This is my first visit,” she said. “It’s a really neat town.”