Rain did not diminish alertness on the Mall among those assembling for the July 4 fireworks.

Police cordoned off an area around some portable toilets Monday evening after someone reported “seeing something suspicious,” said Sgt. Anna Rose, a U.S. Park Police spokeswoman.

Authorities determined the item was “not a threat,” she said, and the area was reopened.

The item appeared to be a digital pedometer. Rose said it was found inside one of the toilets.

The person who reported it “did the absolute right thing,” Rose said.

The incident seemed indicative of the currently heightened state of concern about possible threats and dangers.