Strong arm robbery, also commonly known as strong armed robbery, is a violent crime in which one individual robs another by force or intimidation. Convictions can result in severe custodial sentences.
The key difference between strong arm robbery and other forms of theft is that the victim must necessarily have been intimidated by the perpetrator, such as in a mugging. If an item is stolen very quickly, however, even with force, there may not have been time for intimidation to occur and the crime may not technically be called a strong arm robbery. Such might be the case of a purse snatching, for instance.
Establishing a defense on the grounds of a technicality like this will typically require a criminal defense lawyer to thoroughly review all the details of a strong arm robbery arrest.