Police have located three children who had been missing in Thornlie since Wednesday afternoon after visiting their grandmother's house.

Police carried out a limited land search in Thornlie on Thursday afternoon to look for Clinton Indich, 5, Shameeka Indich, 9, and Shancie Indich, 12.

The Indich children have been found safe and well. Credit:WA Police

Police had concerns for their welfare and said the children were found safe and well well thanks to the assistance of the public and media exposure.