Washington (CNN) As a court-ordered deadline to reunite all eligible families the Trump administration separated at the border elapsed, one in three children still remained away from their parents, with no clear indication when they would be reunited.

According to a court filing, the government has reunited 1,442 families with children aged 5 and older by late Thursday. The government says an additional 378 children have already been released under "appropriate circumstances," according to the court filing. That includes children released to another family member or friend who can care for them, children who were released to parents already out of government custody and those who have turned 18.

But there are more than 700 children still left in government custody, unable to be reunited with their parents any time soon. The government maintains that it could not or should not have reunited all of those children, including hundreds of parents who were apparently deported and others who the government says declined to be reunified or have criminal histories.

In an update Friday morning, a DHS spokesperson issued a statement that the government had completed one of its tasks -- reuniting all parents who had still been in government custody and were deemed eligible in time with their children.

The spokesperson provided no new numbers from Thursday, and it's not clear how many additional reunifications have taken place. The statement also noted some parents "are not eligible or available for reunification" Friday, including the hundreds who are no longer in the country, some who were released in the US and haven't yet been located, or those the government declared it had safety concerns about.

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