[Updated at 10:50 a.m. ET] People are being allowed back into the Canadian Embassy in Washington after police have given the "all clear" after a report of a suspicious package inside.

[Posted at 10:02 a.m. ET] The Canadian Embassy in Washington has been evacuated and surrounding streets are being closed after a suspicious package was found inside, Washington police said.

Police said an envelope with a white substance was found.

A law enforcement team that deals with chemical, biological and hazardous materials was at the scene, police spokesman Araz Alali said.

The 400 to 600 blocks of Pennsylvania Avenue have been closed.