On Monday, letters went out from Foothill Middle School about an incident back on August 31st.
A similar suspect has been described to parents at Pleasant Hill Middle School.
The most recent incident happened in Concord on Saturday on Fernbank near Fawn Glen where an 11-year-old said a man tried to lure him into his car.
In most of the instances the man has been reportedly accompanied by a woman, both in their 40s or 50s. He's described as being white with gray hair and a mustache. She's described as being Hispanic or Mediterranean with dark skin, shoulder length dark hair and she was wearing hospital scrubs.