Police are seeking the assistance of the public to help locate missing boy, Kaylan Kilmister.

Kaylan Kilmister, 11, was last seen at Old Noarlunga about 3pm on Monday 22 June. Police are concerned for his welfare.

Kaylan Kilmister is 148 cm tall, with a slim build, his hairstyle now has shaven sides with longer black hair on top, blue eyes and freckles.

He was wearing a black cap, blue hoodie and grey Everlast trackpants.

Anyone who spots Kaylan Kilmister or has information on his whereabouts is asked to contact the police assistance line immediately on 131 444.