UPDATE: Simon Dean Porter is now in custody.

The Tennessee Bureau of Investigation said Porter was taken into custody in Scottsboro, Alabama. 

A spokesperson for the Scottsboro Police Department said a passerby saw Porter walking along the 15000 block of Highway 79.

The person then called police. Officers were able to identify Porter and arrest him.

He was taken to the Scottsboro City Jail, but will be extradited back to Tennessee.

"Thank you for helping us spread the word!" a TBI spokesperson said.

Porter is a suspect in the aggravated rape of a child.

PREVIOUS STORY: The Tennessee Bureau of Investigation has added a suspect in the aggravated rape of a young child in Lawrenceburg to its Top Ten Most Wanted list.

Simon Dean Porter, 33, is believed to be traveling in a 1997 green-colored Chevy S-10 pickup truck with a red tailgate and TN license plate 3G26Z9.

Porter is described as a white male with red hair and hazel eyes. He is 5'9" and weighs 250 pounds.

There is a $2,500 reward being offered for information leading to his arrest.

If you see Porter, call 1-800-TBI-FIND.