Ontario's Special Investigations Unit says a man who was injured when he jumped from a balcony after being hit by a police stun gun was the "author of his own misfortune."
The police watchdog says there are no grounds to believe two Toronto police officers committed a criminal offence.
The SIU says officers went to a fourth-floor Weston Road apartment in September to arrest 42-year-old Daniel Wright.
The agency says Mr. Wright used sheets to shimmy down to a third-floor balcony, where he threatened officers and told them he had a weapon and was going to jump.
An officer fired a stun gun at Mr. Wright but the SIU says it was ineffective because only one of two probes hit the man. The SIU says Mr. Wright then jumped from the balcony and suffered a number of broken bones.
SIU director Ian Scott says police acted lawfully and were justified in using the stun gun, adding that Mr. Wright chose to jump from the balcony.
"No officer was close to him when he went over the railing," Mr. Scott said in a statement.
"Accordingly, in my view, the complainant was the author of his own misfortune and the subject officers cannot be held criminally liable for his injuries."