After a full day of deliberations, an Oakland County jury found a Pontiac man guilty of second-degree murder for the slaying of a 20-year-old man, whose body was recovered from a Pontiac lake six years ago. Jurors returned with their verdict at around 4 p.m. Tuesday for Angel Jose Alvarez, 24, for the death of Emilio Valdez, 20. Valdez’s body was found in Osmun Lake in Pontiac on June 7, 2018, but it was four years before Alvarez was charged. An…