This was a precautionary measure and there were no threats to the president or his family, CNN television reported, citing a White House official.

A small private aircraft entered the restricted airspace apparently by mistake and preventive actions were taken, but both have since returned to their residence in Rehoboth Beach, the report added.

The Biden family plans to spend this weekend at his home in Delaware, in part to celebrate the first lady’s birthday, which was Friday.

In the next few hours, a statement from the Secret Service is expected to report on the incident.

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