Derrick O'Connor (1941-2018) was a Veteran Irish Character actor best known for his role as Pieter Vorstedt in Lethal Weapon 2 (with Mark Rolston, Jenette Goldstein, Nestor Serrano, etc), he played Alexander Khasinau in Season 1 Episodes 1.16 The Prophecy, 1.21 Rendezvous and 1.22 Almost 30 Years and Season 2 Premiere The Enemy Walks In.
He passed away in June 29, 2018 due to a pneumonia at the 77 years old.