Authorities say a man who posed as an undercover police officer kidnapped a woman in Seattle, drove her hundreds of miles to his home in Oregon and locked her in a cinder block cell until she bloodied her hands breaking the door to escape.

A woman who escaped her kidnapper by punching her way out of a homemade cinder block cell at a home in southern Oregon likely saved other women from a similar fate, authorities said, by alerting them to a man they now suspect in sexual assaults in at least four more states.