TOWSON, Md. (WJZ) — Sexual activity while on duty cost a Baltimore County police officer his badge Monday.

Alex DeMetrick reports it’s part of a plea deal.

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It was the cell phone of a 16-year-old girl that ultimately led to 29-year-old Aaron Pross’ arrest. Using his own phone, he sent her sexual videos and images of himself from his patrol car, while on duty as a Baltimore County cop. He also rendezvoused with a woman behind a Parksville 7-Eleven, where he videotaped their sex acts. During those activities, he failed to respond to dispatch calls.

“It’s very disturbing to be looking at this cell phone video of an officer doing things he shouldn’t have been doing on the job and at the same time, hearing the radio broadcasts of calls for assistance,” said Baltimore County State’s Attorney Scott Shellenberger.

Pleading guilty to one count of misconduct in office, Pross agreed to no future contact with the teen and resigned immediately from the police department. In return, no additional charges were brought.

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The state is not demanding jail time, but that decision will be up to a judge at sentencing later this summer.

“At this time, I really have no comment. We’re coming back for sentencing on July 17, so we’ll know a little more at that time,” said Pross’ lawyer Shaun Owens.

But the state doesn’t want Pross to get probation before judgment, which could eventually expunge his guilty plea.

“We think his conduct needs to follow him around so that he not be hired by another police agency,” Shellenberger said.

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The case against Aaron Pross began with the father of the 16-year-old girl who discovered the images on her phone and alerted police.