A registered Level 3 sex offender from Commack is again facing abuse charges.

Police arrested Jonathan Knight, 48, after getting a tip from the state Department of Social Services hotline. Knight, who also uses the name Kenneth Talbot, is the manager of a retail store. According to police, Knight sexually abused a 15-year-old boy at the store.

Knight has been charged with endangering the welfare of a child, sex abuse and forcible touching. He is currently out on $2,000 bail until his trial.