Parents in Brentwood are on high alert after a man was caught on camera jumping out of his truck and approaching a young girl Tuesday.   

A woman says her 13-year-old daughter was approached by a stranger who got out of a blue pickup truck and sprinted toward the girl. The girl had been walking with a friend on Gibson Avenue. 

Witnesses say the man tried speaking with the teenager and then ran off. 

According to police, no one was hurt, and the encounter is under investigation. Police say the incident also appears non-criminal.

Some parents told News 12 they are afraid to let their children walk around the neighborhood. 

They say they want their children to be in big groups if they can.