A Calgary man who stabbed his neighbour 37 times in May of 2013 has been found guilty of manslaughter.

Nicholas Rasberry, 32, had been charged with second-degree murder in the death of Craig Kelloway but Justice Robert Hall found the accused guilty of the lesser charge of manslaughter.

"In essence, he found that there was self-defence, however, the nature of the force used by Mr. Rasberry was excessive under the circumstances and therefore could not be justified under self-defence,” said Crown council Todd Buziak.

"“The decision we found to be very thorough and, of course, we’re pleased with the outcome.” 

Rasberry and Kelloway were neighbours and were having drinks at an Auburn Bay area home when they got into an altercation and Kelloway was fatally stabbed.

The medical examiner took the stand during the trial and testified that Kelloway was stabbed 37 times in the attack.

Rasberry said in a police interview that Kelloway threatened to sexually assault him and his wife and that he acted in self-defence.

The prosecution argued that Rasberry, who didn't testify during the trial, did not sufficiently explain why he needed to use three knives or why the attack was so vicious.

Justice Hall has ordered Rasberry to undergo a psychological evaluation. A sentencing date will be scheduled on November 6, 2015.