Update: Pittsburgh Police said 12-year-old Kirill Matveev has returned home and is safe.
Original Story: Authorities are asking for help locating a missing 12-year-old boy.
Kirill Matveev was last seen Monday afternoon in the 2300 block of Arlington Avenue.
He's 5-7, weighs 140 pounds and has brown eyes and brown hair. Kirill is known to frequent the Arlington area.
Anyone with information is asked to call Pittsburgh Police.





