INDEPENDENCE, Mo. (AP) – A 26-year-old Kansas City man has pleaded guilty to fatally stabbing another man in Independence in 2013.

John Seger pleaded guilty to voluntary manslaughter in the death of Corey Laykovich.

Seger was sentenced Thursday to nine years in prison.

Court documents show Seger and Laykovich argued and got into a physical disturbance that ended with Seger stabbing Laykovich in early 2013.

The case went uncharged for years and inspired Laykovich’s mother to found the victim advocate group Corey’s Network, Inc.

A break in the case came in early 2016, when Seger was arrested in an unrelated incident.