Son killed in hit and Run Justice for Dereck

Hello Facebook.
My uncle was riding his bike and was killed in a hit and run accident early this morning on sterling in between baseline and 9th . We are so lost and we dont understand why anyone would do this to him. They just left him there to die . My grandma is hurting so bad over her son he was a cancer survivor and did not deserve to die this way..we are begging for help with anything . Anything will help . He was only 54 years old.  He didnt deserve this