A former Travelers Rest police officer is accused sexually assaulting a 17-year-old boy while threatening him with a stun gun, according to an arrest warrant.

Greenville County deputies arrested Shawn Jeffrey Jenkins, 27, Tuesday and charged him with second-degree criminal sexual conduct.

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The 17-year-old told investigators Jenkins pointed the stun gun at him while he was visiting Jenkins' residence Aug. 5 and told him to "strip or be tased," the warrant states. Jenkins then sexually assaulted him, according to the warrant.

Travelers Rest Police Chief Ben Ford said he fired Jenkins last week in relation to the Greenville County Sheriff's Office's investigation.

According to files on record with the South Carolina Criminal Justice Academy, Jenkins started at the agency on April 5 and was officially let go Thursday. An employee separation letter states that a "violation of agency policy" prompted his termination.

The records show Jenkins had not worked as a police officer in the state prior to starting at the Travelers Rest Police Department and was still in training.

Jenkins underwent a psychological evaluation and criminal background check in March before starting at the agency, according to his employment files.

A state background check does not show Jenkins has any past criminal charges or convictions in South Carolina.

Ford said a board of five police officers interviews all prospective hires before a conditional offer is made, and candidates are required to undergo a polygraph test, medical and psychological review, and background check conducted by an investigator with the agency before they're hired.

"I think we do about the best job of screening we can," he said. "You just can't catch everything, unfortunately... We go above and beyond trying to check everything we can before we make a hire."

Jenkins was also a part-time employee with Greenville County EMS, according to Bob Mihalic, Greenville County's government affairs coordinator. The agency put him on unpaid leave Aug. 8 and Jenkins resigned Saturday.

He started as a full-time EMS employee in March 2011 and switched to part time earlier this year, Mihalic said.

He has been released on a $20,000 bond, according to a statement from the Sheriff's Office.