Update: Police have confirmed that Riley Smith has now been found safe and well.
Lincolnshire Police are searching for a missing 12-year-old boy from Louth.
Riley Smith was last seen on Sunday, May 19 at around 6pm on Winteringham Road in Grimsby.
He was waring a black Adidas tracksuit and black trainers when he went missing.
Anyone who recognises missing Riley is being urged to call 101, quoting reference 104882.