A Nassau teen is accused of making a sexual advance toward a 10-year-old boy, and prosecutors say it is not the teen's first lewd offense.

Petar Dunat, of Bethpage, was arraigned in court on Saturday. He pleaded not guilty to endangering the welfare of a child.

The charge stems from an incident on June 18, when Nassau police say a man approached a boy in a Hicksville neighborhood and made sexual advances. Prosecutors say the suspect asked the child to have sex and if he could perform oral sex on the boy. The child then went home and told his parents, police say.

Dunat, 18, who is a student at Nassau Community College, was arrested at his home on Stewart Avenue on Bethpage.

Dunat's attorney, Alan C. Stein, says it's a case of mistaken identity.

"We believe that this is a case that is sensitive to the district attorney, sensitive to Nassau County police and that they were searching for someone to arrest and that in this case, Mr. Dunat was the person that they arrested," says Stein.

Back on June 27, Nassau police say Dunat touched himself inappropriately in his car while asking a 70 year-old woman for directions in Hicksville.

Stein says Dunat is not guilty of that case either.

Dunat is due back in court on July 9 for the incident involving the 10-year-old, and on Aug. 5 for the incident involving the 70-year-old woman.

Dunat's bail was set at $2,500. After the judge set bail and the next court date, she ordered the records of the case sealed.

Dunat's parents, who were in court on Saturday, declined to comment.