A Lansford police officer cultivated a sexual relationship with a teenage boy last year, giving him beer and showing him pornography, state police say.

Robert J. Shubeck, 40, of Nesquehoning, had sexual contact with the teen, according to Lehighton state Trooper Joseph Campbell, who filed charges on Tuesday.

An affidavit of probable cause filed with District Judge Casimir Kosciolek of Lansford explains the charges:

A criminal attempt of official oppression stemmed from a voice mail that Shubeck left on the victim's phone on Dec. 21, 2012, telling him that there was a warrant for his arrest on "deviant sexual intercourse and all that other (expletive)," and that he was to report to the police station. The teen didn't respond, but was afraid because Shubeck was a police officer.

A charge of stalking was filed because Shubeck drove past the victim's house to try to keep tabs on his whereabouts. He also sent numerous text messages to him at all hours of the day to try to find out where he was and with whom he was hanging out.

Also, Shubeck grabbed the victim and pushed him up against a door at one point because he was upset over who the victim was hanging out with.

Police charged Shubeck with corruption of minors because he gave the teenager alcohol and engaged in sexual activity with him on numerous occasions. Shubeck also showed the teenager pornography on his laptop.

Three charges of furnishing alcohol to minors stem from the allegation that Shubeck gave beer to three teenagers, one 17, one 15-16, and the other 16-17.

Police charged Shubeck with harassment because he repeatedly drove past the victim's house and sent him numerous text messages in an effort to find out where he was and with whom. Shubeck also went to the victim's girlfriend's house to find him, and called the victim's friends when he couldn't find him.

The affidavit states that Shubeck used his position as a police officer to enter the teen's girlfriend's house to check on his whereabouts.

All of the charges are misdemeanors except for the one of harassment, which is a summary offense.

According to the affidavit, here's what happened:

On Dec. 24, 2012, a woman called state police to say her 18 year-old son, who aspired to be a police officer, had been involved in an inappropriate relationship for five months with Shubeck. Shubeck had befriended the then 17-year-old in July 2012.

About a month after they met, Shubeck invited the teen to his house, where he gave him beer. The teen spent the night, and told police Shubeck talked with him about his divorce proceedings, and how he was having thoughts about what same-sex encounters would be like.

Over the course of the next few weeks, Shubeck invited the teen to his house to drink beer and hang out. He would text him on numerous occasions to ask where he was and with whom he was hanging out.

The teen's mother told police the relationship seemed to be more a relationship than a friendship or mentoring relationship. In Nov. 2012, the teen tried to end the relationship, but Shubeck persisted in contacting him.

On Dec. 12, 2012, Shubeck pushed the teen against a wall and yelled at him that Shubeck would ruin his life if he continued to hang out with his girlfriend and others. Shubeck was angry that the teen had called him when he needed help when he ran out of gas, but didn't want to hang out or drink with him.

The teen told police that two of his friends would sometimes go to Shubeck's house with him to drink beer and liquor.

The teen told police that Shubeck had been stalking him since Dec. 15, 2012, driving past his house in a police cruiser and in his own car. Shubeck tried speaking with the teen through his parents and friends, and by texting him.