A woman secretly used a hand signal to alert a California 7-Eleven employee she needed help — leading to the arrest of her alleged abuser, according to authorities. Police were called to the convenience store location on Sunday after an employee recognized that a woman was tucking her thumb under her four fingers,

Authorities say a good Samaritan helped a woman escape a domestic violence situation at a convenience store after used subtle hand signals to alert for help.

The behind-the-back signal led to at least one arrest. It's part of a social media campaign to empower victims and bystanders.