With his plea Tuesday, McCall admitted he had sex with a confidential drug informant in her Allegany County, Md., home on a number of occasions between November 1996 and January 1997, according to authorities.
He used his unmarked NTF car and was under the influence of alcohol on those occasions, according to Allegany County State's Attorney Lawrence Kelly who prosecuted the case Tuesday.
Washington County Sheriff Charles Mades and Sgt. Randy Wilkinson assisted Allegany County authorities in the investigation of the allegations that led to the charge.
McCall, 33, of Clear Spring, has been suspended with pay from his duties since Jan. 31, when the 27-year-old woman made the allegations.
The woman's name did not appear in court documents because she is an informant.
Kelly said the investigation by Maryland State Police Trooper 1st Class Charles C. Thomas revealed that McCall had been introduced to the woman last November and he had worked with her in Washington County.
McCall showed up at her Allegany County home several times in the early-morning hours and had sex with her, Kelly said. She complained to authorities on Jan. 31.
"We have had extensive conversations with the victim and she understands about the plea in this case," Kelly said. "The state's purpose is to get a conviction so he won't be employed in law enforcement."
Finan said the guilty verdict should preclude McCall from ever again working as a police officer. A deputy in Washington County since 1992, McCall was previously a police officer in Mercersburg, Pa., and Washington Township, Pa.
"This appears to be an isolated incident," Finan said, noting that McCall had a clean criminal record.
Defense attorney Eric Andrews said alcohol was a major factor in McCall's behavior during the three-month period in question.
"It's kind of a Catch-22 situation for these narcotics agents," Andrews said. "They go out to bars and drink as undercover agents in their work."
"I stand here before you with deep regrets," McCall said to Finan. "I've done a lot of things and I need to apologize to my wife and family."
McCall's wife of 14 years was seated on the front row and has been supportive throughout the ordeal, Andrews said. The couple has two sons.
McCall has been evaluated and will undergo alcohol treatment in Hagerstown, Andrews said.
"Part of this was the alcohol," McCall said. "But it's something I've done and I have to deal with it."
After the hearing, McCall declined to comment further.
Andrews said only that his client is anxious to put all this behind him but realizes he still has the administrative hearing ahead.