MANHATTAN, Kan. (AP) — Jurors are returning to court to decide whether a northeastern Kansas man convicted of killing his ex-girlfriend and their son should be executed or receive a lesser sentence. The Manhattan Mercury reported that the penalty phase of Luis Aguirre's capital murder trial gets under way Monday. Jurors in Riley County District Court deliberated only a few hours last month before convicting Aguirre of suffocating 18-year-old Tanya Maldonado and the couple's 13-month-old son, Juan, in September 2009 at the young woman's home in Manhattan. A hunter found the bodies the following month in a shallow grave near Ogden. Evidence in the trial included video of Aguirre telling investigators the deaths were accidental.