INDIANAPOLIS -- UPDATE: The Indianapolis Metropolitan Police Department announced the Green Alert issued for 44-year-old Justin Cavin has been cancelled as of Thursday.

For more information on this cancellation, you may contact the Indianapolis Metropolitan Police Department at 317-327-3811.

ORIGINAL STORY: An official Green Alert has been declared for 44-year-old Justin Cavin who is missing out of southwest Indianapolis.

Cavin is said to be a 6'1" tall White male who weighs 180 pounds and has brown hair with green eyes.

He was last seen on Wednesday, Sept. 11 around 10 p.m.

Authorities say he is believed to be in extreme danger and may require medical assistance.

If you have any information on Justin Cavin, contact the Indianapolis Metropolitan Police Department at 317-327-3811 or 911.

Green Alerts are issued when United States military veterans go missing.