. >> reporter: that's carlos who is a grandfather of joseph viramontes who was found at an elementary school in san jose on march 25th. he was shot to death. no arrests have been made. police say it's an open investigation. he was a student and worked as a dishwasher at local hospital and played football for the 49ers until he was 16 and his grandfather putting up a $5,000 award hoping it will lead to the arrest of the person responsible for the murder of his son. >> i want to know before i die who did this. >> whoever did this, please come forward. that's all i ask. >> reporter: san jose police told me the reward is a personal choice made by the grandfather and we hope that this will convince someone to come forward with additional information that will assist investigators in solving this case. if you have any information, call sap jose police or crime stoppers. reporting live in san jose, matt keller, abc news. >> the santa clara county sheriff's office is asking for your help tracking down a missing teenager who is at risk. take a look here at your screen. this is 16-year-old inoa