A former youth singing group leader has been sentenced to 20 years in prison on charges that he molested several boys decades earlier.

Berkeley County Judge R. Markley Dennis sentenced Tommy Flack, 59, to 20 years on each of the three counts of second-degree criminal sexual conduct with a minor and 10 years for each of three counts of committing a lewd act on a minor. The sentences, the maximum allowed by law, will run concurrently.

The allegations against Flack surfaced in 2006, when a young man told Berkeley County deputies he had been sexually abused by Flack, and claimed others had been as well. Flack, the former music minister at the First Baptist Church of Goose Creek, led a singing group there called The Deacons. Many of the alleged victims sang in the group, and claim they were molested in Flack's home and while the singing group was traveling. Most of the incidents took place between 1977 and 1983.

Many of his victims spoke at the sentencing hearing.

Solicitor Scarlett Wilson said the 9th Circuit Solicitor's Special Victim's Unit was instrumental in the case.

"It takes dedication and expertise to work with victims who have been damaged by years of abuse and who have been taught to feel shame," Wilson said. "These convictions validate the victims' trust and hopefully will send a strong message to those who prey on vulnerable children."

Flack pleaded guilty to the charges, which have been pending since 2007.