A Manitoba man arrested after he was spotted in a ditch having sex with a dog has been sentenced to four months house arrest.

Adrian Choken, 29, of Little Black River First Nation, was convicted after trial of one count of bestiality in connection with the Feb. 18, 2015 incident.

In an unusual turn of events, Choken admitted to committing the offence while under cross examination.

Choken “admitted what happened had happened and left the defence in a very difficult position,” Judge Kelly Moar said.

Moar said he was satisfied Choken did not pose an ongoing threat to the community, but ordered that he not possess or have contact with dogs or other “domesticated animals” during the term of his house arrest.

Choken might have escaped prosecution had he not called police first to complain he had been assaulted.

Police interviewed Choken's alleged attacker, who said he was driving to the local dump when he saw a man in the ditch, Crown attorney Sari Daien told court at an earlier sentencing hearing.

"When he got closer, he could see that Mr. Choken was having intercourse with a dog," Daien said. "His pants were down to his ankles and the dog was in his lap trying to get away."

The "mortified" witness got out of his truck "and tried to put a stop to it," Daien said.

"Mr. Choken ... tried to disengage from the act, but was essentially stuck in the dog," she said. "Fortunately, he was able to eventually disengage and the dog ran away yelping."

Court heard the witness then punched Choken in the face.

Choken had an abusive upbringing that "undoubtedly contributed to the offence before the court," Daien said.

dpritchard@postmedia.com

Twitter: @deanatwpgsun