The city of Carson is offering a $25,000 reward for any information about the man who killed an 85-year-old Navy veteran. 

Frank Hernandez was walking near his home in May when he was accosted, beaten and robbed. His son, Andrian Hernandez, pleaded with the public for any tips about his father's killer. 

"I'm asking all you lifers in the city of Carson, to speak up. I know you guys know something. Somebody out there knows something." 

Police released a sketch of the male, adult suspect, a neighbor, who was also punched, assisted the sketch artist with the image. He's described as as a Latino man in his 20s with a light complexion and short, curly hair. He was last seen wearing a grey hooded sweatshirt, dark shorts and a dark baseball cap, deputies said.

His widow, Lucy Hernandez hopes the reward offered by the city will lead to more information about her husband's murder. 

"This could be your family standing up here instead of us. Help us." 

Investigators have been looking for surveillance video of the attack, but have so far come up empty. If you have any information Carson authorities encourage you to call Sgt. Fred Reynolds or Det. Adam Kirste at (323) 890-5500.