BOONE COUNTY, Mo. – An unknown good samaritan foiled a robbery attempt in Columbia late Saturday night.

A woman was walking to work on Worley Street when four young men came up behind her, two with guns. The victim told police, that someone in a White pickup began revving his engine when they saw the four men and circled through a parking lot to come back to the victim. The four men ran to bicycles and fled the scene. The victim says the person in the White truck probably saved her life.

Police say they chased down all four suspects and have them in custody.