A chemical leak has prompted Grant County authorities to close roads around the REC Silicon Inc. plant in Moses Lake.

Kyle Foreman of the Grant County Sheriff's Office says people who work near the plant have been told to stay inside and close doors and windows.

Foreman says they believe they have the situation under control, and there have been no reports of injuries.

A plume of chemicals escaped from the plant Friday morning and moved south toward Interstate 90. Foreman says the contents of that plume are not immediately known. But it prompted officials to close all local roads around the REC plant and order people at neighboring businesses to stay indoors. Interstate 90 remains open.