A brave whistleblower helped police in Yantai, Shandong province, crack open a gang.

A resident informed police that a woman who rented a room near her often showed up at night with tattooed men.

Suspicious of the woman, he asked police to check her identity and they later learned she was a wanted criminal.

She and her accomplices robbed cabbies across Shandong. The next day, police caught her three accomplices.