Matthew Perry's assistant has received a prison sentence of over three years for their central role in the actor's death from ketamine. Perry was a star of the hit sitcom 'Friends'.

Mathew Perry became a major TV star along with Courteney Cox, Jennifer Aniston, Matt LeBlanc, David Schwimmer and Lisa Kudrow on “Friends”, NBC's megahit sitcom that ran from 1994 to 2004