Police ask public for help to find boy missing from Adelaide's north-eastern suburbs

Police have appealed for help to find a young boy missing from Adelaide's north-eastern suburbs since the weekend.

William Southam, 11, was last seen at Campbelltown about 11am on Sunday.

He is described as 160cm tall and about 70kg, with a medium build, dark brown hair and hazel eyes.

It is not known what William was wearing at the time of his disappearance.

South Australian Police are urging anyone who has seen William or may know of his whereabouts to call 131 444.