4th anniversary of Kyron Horman's disappearance

4th anniversary of Kyron Horman's disappearance
Kyron Horman on the last day he was seen (left) and in an age-progression photo (right)

PORTLAND, Ore. (AP) - Wednesday marks the fourth anniversary of Kyron Horman's disappearance.

Kyron was 7 when he vanished from his Portland school on June 4, 2010. A massive search came up empty, and no arrests have been made.

The boy was driven to school that day by his stepmother, Terri Horman. She told authorities she last saw him walking down the hall toward his classroom about 8:45 a.m.

Nobody saw him after that.

Kyron's biological mother, Desiree Young, said in a Facebook message Wednesday she will never stop looking for him, and a private search will be conducted June 20, 21 and 22.