A Carbon County man was sentenced to a county prison term on Monday on sexual assault charges.

Andrew Michael Bertalan, 22, of Blakeslee, was sentenced by President Judge Roger N. Nanovic II to serve a total of four to 23 months on one count each of statutory sexual assault and criminal use of a communication device, both felonies. Bertalan previously pleaded guilty to the charges.

Bertalan was arrested by state police at Lehighton with having sexual relations with a then 15-year-old girl when he was 19 years of age. The sexual encounters occurred over a period from October through December 2010.

Nanovic rejected a plea from defense Attorney George T. Dydnsky for a probation period or house arrest.

When first confronted by troopers Bertalan admitted to the sexual relationship with the girl but claimed he did not know how old she was.

However, the girl told troopers Bertalan attended her 15th birthday party and knew that she was in the ninth grade.

She also said the sexual acts occurred at her residence and at Bertalan's grandfather's home.

Bertalan also initially denied taking nude photographs of the victim, but then related that he did take two or three photographs of the victim with a cell phone while she was topless during a sexual encounter.

In addition to the jail term Nanovic ordered Bertalan to get a updated drug and alcohol evaluation, get a sexual offenders evaluation, zero tolerance on D&A use, have no contact with the victim, supply a DNA sample and pay the $250 fee, pay a $50 per month supervision fee while on probation or parole, and pay court costs.

He will begin the jail term on Jan. 21 at 10 a.m.