The searches, seemingly the most significant public step the Justice Department has taken against a perceived enemy of the president, are likely to elicit fresh concerns that the Trump administration is using its law enforcement powers to target the Republican’s foes.

Sources familiar with the matter told ABC News that the search, carried out by the FBI, was related to allegations that Bolton is in possession of classified records.

The FBI was searching the home of former national security adviser John Bolton, who has become a critic of President Trump, according to news reports.