Lichtenstein's black and white "Electric Cord" was reported stolen after it was sent out to be cleaned by owner Leo Castelli in 1970 and never returned.
The painting shows a tightly wound electrical cord. Court papers say it re-emerged last week when the Roy Lichtenstein Foundation notified Castelli's widow, Barbara Castelli, someone was trying to sell it.
Castelli's court filings say the painting recently was on display at a museum in Colombia. They say Castelli is "deeply concerned" the painting may disappear again.
A judge on Tuesday signed an order barring the Manhattan warehouse from selling or moving the painting until a hearing next week.
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