MIDLAND -- Update: July 13th, 1:45 p.m.

A Dow Corning spokesman tells NBC25 a small vapor release happened just after 10:30 a.m.   No hydrogen chloride was detected off site. An invetigation is underway on what caused incident.

Update: July 13th, 11:41 a.m.

Midland Dispatch reports that the chemical incident has been downgraded, and all roads are now reopened.

NBC25 has learned via dispatch that there is a possible HCL chemical leak at Dow Corning's 502 building.  Saginaw Road is closed between Bay City Road and Gordonville Road. Salzburg Road between Saginaw and Waldo Roads is also closed.

NBC25's crews are heading to the scene now, and will have more information on NBC25 News at 6:00 p.m. and here on www.connectmidmichigan.com.