The numbers '8647' mysteriously appeared in a park in downtown Washington, D.C., prompting the US Department of the Interior to describe the markings as a 'disturbed act of vandalism' that will not be tolerated.

Otak, the US subsidiary of South Korean firm Hanmi Global, has been awarded an indefinite delivery/indefinite quantity (IDIQ) contract worth $400 million with the US Department of the Interior's National Park Service.