Willie Boy O’Neill, three, and two-year-old Tojo O’Neill, formerly of Caldon Road, Irvine, have not been seen since Sunday August 3.
They are believed to be in the company of their parents Claire Watson, 32, and Robert O’Neill, 39, according to police Scotland.
Officers have launched an investigation and are now appealing for any information on the whereabouts of the two boys from Ayrshire in Scotland.
If you have any info please contact Police Scotland on 101
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