A Lancaster Township man — already facing sex charges involving two Ephrata area girls — was charged this week with a third incident involving a Mount Joy teenager.

Timothy Donnell Anderson, 36, of 141 Conestoga Blvd., was charged by police on Wednesday with sexually assaulting and taking nude photos of a 15-year-old girl last July.

One of their meeting spots, police said, was the Mount Joy Lions Club Pool on Fairview Street in Mount Joy.

According to a news release issued by the district attorney's office, Anderson sexually assaulted the girl and took nude photographs.

The incidents took place in July at various times and places, police said, including the swimming pool.

Anderson was charged by Mount Joy police Detective Donald J. Rusnak with aggravated indecent assault, sexual abuse of children, unlawful contact with a minor and corruption of minors.

He is already in jail on the earlier charges, but prosecutors said District Judge William G. Reuter set bail at $150,000 on the latest charges.

Earlier this month, Anderson was arrested for a second time by agents from the state Attorney General's Child Predator Unit.

Last summer, state agents said, Anderson had contact with two other Lancaster County teenage girls.

In both of those cases, prosecutors said, Anderson met the girls via the Internet. That was not the case with the Mount Joy girl, officials said.

With his first arrest, a 14-year-old Ephrata girl told her parents that a Lancaster man had been sending her suggestive text messages on her cell phone after adding himself as a friend on her MySpace account.

Her parents contacted authorities and agents with the Attorney General's office took over, pretending to be the girl and agreeing to a sexual encounter.

When Anderson arrived in Ephrata for the rendezvous on Sept. 11, agents placed him under arrest.

After the arrest, agents confiscated and reviewed Anderson's computers, discovering another alleged victim — a 15-year-old girl from Stevens.

Agents found discussions between Anderson and the girl about their alleged sexual encounters and a nude photograph of the girl on Anderson's cell phone.

Through computer forensics, along with the help of Ephrata police and school officials, agents were able to identify and talk to the teenager.

She told police that Anderson contacted her in July after she posted personal information on her MySpace social networking site.

Anderson, a self-employed computer salesman, traveled to her home twice, performing various sex acts and taking the pictures, she told police.

In announcing the first arrests of Anderson, Attorney General Tom Corbett urged parents to discuss the importance of Internet safety with their children.

Children also should be encouraged to report any inappropriate contact involving strangers, Corbett said, including sexually suggestive comments, attempts to arrange face-to-face meetings, threats or abusive behavior.

And Corbett told parents to warn their children not to share personal information such as addresses and phone numbers.

For more information about reporting Internet predators and education programs, go to www.attorneygeneral.gov or call 1 (800) 385-1044.

jkelley@lnpnews.com