Story highlights Nooses also found at museum, two universities

No arrests have been reported

(CNN) A noose has been found at a construction site in the District of Columbia, police said -- at least the fifth time this symbol of racial violence has turned up in the Washington area recently.

Officers went to a house under construction in southeast Washington on Thursday morning and "discovered a rope, tied in a noose, displayed by the front door," a police report said.

The property manager said the noose was not present when work ended the previous day, the report said.

The house is unoccupied and no arrests have been made.

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