Investigators believe the man they call the "Shaggy Bandit" because he looks like "Shaggy" from "Scooby-Doo" robbed another bank on Thursday, this time in Boulder.

They believe he robbed a First Bank inside the King Soopers on 30th Street.

The FBI now believes he has robbed 12 banks in Colorado and one in Arizona. They say he seems to prefer banks inside grocery stores.

Investigators think there is a second person waiting in a get-away car outside the banks, but at this time they do not have a description of that person.

He is described as a man in his late 20s or early 30s, he has a slim build, is between 5 feet 5 inches to 5 feet 10 inches tall and has blondish hair. He may have facial hair and acne or pock marks on his face. He usually wears a hat and carries a backpack.

The FBI thinks the "Shaggy Bandit" is responsible for the following robberies or attempted robberies:

Community Banks of Colorado
277 North Broadway
Denver
06/24/2009

Vectra Bank
401 East Speer Blvd.
Denver
06/25/2009

Advantage Bank
1611 Canyon Blvd.
Boulder
06/26/2009

Wells Fargo Bank
1050 Ken Pratt Blvd.
Longmont
06/26/2009

Wells Fargo Bank
201 North Switzer Canyon
Flagstaff, AZ
07/08/2009

First Bank
6350 North Sheridan Blvd.
Arvada
07/17/2009

Corefirst Bank and Trust
6220 East 14th Avenue
Denver
07/21/2009

First Bank
17000 East Iliff Avenue
Aurora
07/21/2009

Vectra Bank
401 East Speer Blvd.
Denver
07/29/2009

First Bank
6350 North Sheridan Blvd.
Arvada
07/29/2009

Wells Fargo
3900 Wadsworth Blvd.
Wheat Ridge
08/07/2009

US Bank
730 North Colorado Blvd.
Denver
08/10/2009

First Bank
4271 South Buckley Road
Aurora
08/18/09

First Bank
1650 30th Street
Boulder
08/20/09

If you know who the "Shaggy Bandit" is call Crime Stoppers at 720-913-STOP (7867) to be eligible for a cash reward of up to $2,000. You can remain anonymous.