The CBI said Thursday the change in a 2015 Look Out Circular against liquor baron Vijay Mallya from "detain" to merely informing about his movements was an "error" in judgement because he was cooperating in the probe and there was no warrant against him.

Three years later as the controversy surfaced again Thursday, the CBI sources said when the first Lookout Circular (LoC) was issued on October 12, 2015, Mallya was already abroad.