LASD noted both victims are of Asian-American/Pacific Islander descent and the attacks were both in Calabasas.
Video recorded by a nearby home's surveillance camera captured the moment the suspect -- later identified by law enforcement as Angel Sanchez Jr., 29 -- walked up to the grandfather before sucker punching him in the face. The impact sends both the man and the stroller to the ground, before the suspect walks back into his Honda Odyssey.
While the 60-year-old victim didn't want to be identified, he told FOX 11 that the baby suffered some bruising, while he has multiple broken bones and may need surgery. A boxing coach for the teen, meanwhile, said the suspect "grabbed him, slammed him and started punching him all in his face and his body," before the boy was able to fight back and get to safety.
The make and model of Sanchez's vehicle, as well as license plate number were released publicly by LASD and, on Wednesday around 2:15pm, he was arrested in Oxnard for Assault with Force Likely to Produce Great Bodily Injury.
"Although both victims of the assaults were of Asian descent, the motive for the attacks is currently under investigation," added sheriffs.