People v. Cooper
Supreme Court of California
811 P.2d 742 (1991)
Relevant factsFree
Cooper (defendant) drove two companions to a parking lot, waited as they robbed an elderly man, and then drove them away as they jumped into his already-moving car with the doors open; he was convicted of robbery as an accomplice, and argued on appeal that he lacked prior knowledge of or intent to aid the robbery and should be liable, at most, as an accessory after the fact.
IssueFree
Whether, to be held liable as an accomplice to a crime, an individual must have formed the intent to aid and abet the crime's commission before or during the crime, prior to its completion.