Washington (CNN) White House press secretary Sarah Sanders said Sunday that the Trump administration was still considering whether to place some immigrants in so-called sanctuary cities.

"Look, this is an option on the table," Sanders said on ABC's "This Week."

Sanders said the move would not be President Donald Trump's "first choice" but remained something the administration might do. She said when the idea was brought up "at a staff level," the administration had not moved forward with it because "logistically, there were a lot of challenges and it probably didn't make sense to move forward," but was now under consideration again.

"The President heard the idea, he likes it, so -- well, we're looking to see if there are options that make it possible and doing a full and thorough and extensive review," Sanders said.

Trump confirmed on Friday that his administration was looking at the idea of releasing immigrants into so-called sanctuary cities in part to retaliate against Democrats, undercutting earlier denials from his own administration officials.

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