A man was arrested on multiple complaints including manslaughter. Authorities said he had marijuana in his system when he caused a deadly collision in Oklahoma County in December, 2014. According to the Oklahoma County Sheriff’s office, the collision happened on December 1, 2014, in the 900 block of S. Anderson Road. Matthew Allen Kupczynski, 26, reportedly drove into oncoming traffic and crashed into another vehicle driven by 56-year-old Lowell Wayne Allen. Allen was killed as a result of the crash.