Charges have been dropped against a Halifax boxer who was accused of aggravated assault and assault with a weapon.

Tyson Cave was charged after an alleged fight in a Lower Sackville, N.S., bar on New Year's Day in 2014.

Chris Hansen, spokeswoman for the public prosecution service, said the Crown must continually assess the prospect of conviction in every criminal prosecution.

"When in a Crown's assessment there is no longer a realistic prospect of conviction, the Crown is obligated to halt the prosecution. And that's what happened yesterday," she said.

Hansen said she could not provide details on why the Crown felt a conviction was unlikely.

Complainant's testimony problematic

Cave's lawyer, Laura McCarthy, said the Crown's case was based largely on the complainant's testimony.

"It became apparent that he wasn't really being truthful at the preliminary inquiry and he essentially committed perjury through that process," McCarthy said.

"So the Crown assessed their case and realized that they didn't have a reasonable prospect of conviction and decided not to call evidence."

The case has weighed heavily on Cave and has affected his career, McCarthy said. Cave won the World Boxing Union super bantamweight title in 2015.

"It impacted his career to a large extent. Having pending charges would impact endorsements as well as various fight promoters for his boxing career," McCarthy said. "That's eating away at the remaining portion of his career and the viability of him continuing to be a professional fighter.

"For him, he's very happy that it's finally past him, but it's been extremely draining in the process."