LOS ANGELES (AP) — A 19-year-old man has pleaded no contest to involuntary manslaughter stemming from the heroin-overdose death of the 18-year-old son of former NFL quarterback Erik Kramer.

David Michael Nernberg was immediately sentenced Thursday to five years of probation and 90 days of community service

Kramer’s son, Griffen, a quarterback at Thousand Oaks High School, died Oct. 31, 2011.

Los Angeles County prosecutors told City News Service Nernberg took Griffen Kramer to his home after Kramer passed out from using heroin at a park, then left him to attend a party.

They say Nernberg awoke the next morning to find Kramer dead.

Prosecutors say Nernberg had a duty to care for Kramer after he passed out.

Erik Kramer played for Atlanta, Chicago, San Diego and Detroit from 1987 to 1999.