DALLAS, Ga. -- For the second time this summer bicyclists were the target of attacks on the Silver Comet Trail.

Two cyclists were stopped and beaten on the popular bike trail in Paulding County last week. The Paulding County Sheriff's Office arrested an adult and two teens in those attacks.

In June, four teenagers were arrested in connection with attacks on two bikers on a stretch of the Silver Comet in Cobb County.

In the most recent cases, three suspects blocked the trail on September 11 and assaulted a rider when he stopped, according to a release from the Paulding Sheriff's Office. He was able to escape without serious injury.

On September 13 another cyclist was assaulted and seriously injured. He was "beaten with a stick and kicked repeatedly," according to the release.

He was taken to Paulding Wellstar Hospital.

"This type of senseless violence will not be tolerated in our county," said Sheriff Bruce Harris.

The adult suspect, 17, was arrested and charged with terroristic threats and acts, aggravated assault, criminal damage to property, possession of alcohol by a minor and public drunkenness.

The minor suspects, a 14-year-old and a 16-year-old, were charged with aggravated assault and criminal damage to property.

Investigators are asking that anyone else who has been attacked on the Silver Comet contact Detective Mary Lunsford at (770) 443-3015.