The robbery took place on Marion Avenue and Walnut Street.
The suspects first drove past the San Marino man, Pasadena Lt. Pete Hettema told the Star-News, then later one suspect came running from behind and put an arm around the victim's neck and grabbed the phone and fled.
Pasadena Deputy Chief Darryl Qualls told Patch Wednesday the attacker fled in a dark-colored, four-door sedan driven by another man. Both suspects are still at large.
The attacker was described as a 5' 11", 205-pound black man in his 40s, wearing dark pants, light-colored gloves and a light-colored beanie cap, said Qualls. A description of his shirt was unavailable.
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