WASHINGTON — Iranian hackers seeking to influence the 2024 election sent excerpts from pilfered Trump campaign documents to people associated with President Joe Biden’s reelection campaign this summer, but the recipients did not respond, law enforcement officials said Wednesday.

The emails, sent in late June and early July, were part of an effort by Iran to steal and disseminate sensitive internal communications among aides working for former President Donald Trump after it gained access to the email accounts of a longtime political adviser, Roger Stone.

“Iranian malicious cyberactors” sent unsolicited emails that contained “an excerpt taken from stolen, nonpublic material from former President Trump’s campaign,” officials at the Office of the Director of National Intelligence, the FBI and the Cybersecurity and Infrastructure Security Agency wrote in a joint statement.

The intended recipients, who were not identified in the statement, did not appear to have replied. Even as federal officials have suggested that the hackers also targeted the Biden and Harris campaigns, they believe the emails including the stolen Trump material were sent to be disseminated to his political enemies.

A spokesperson for the Harris campaign, Morgan Finkelstein, noted that a few people were “targeted on their personal emails with what looked like a spam or phishing attempt,” though she added that she was not aware that material was sent to their campaign email accounts.

“We have cooperated with the appropriate law enforcement authorities since we were made aware that individuals associated with the then-Biden campaign were among the intended victims of this foreign influence operation,” she added.

The Justice Department has been investigating the Stone attack and could charge some of those responsible as early as this week, officials said.

In a speech last week, the senior Justice Department official responsible for investigating overseas election interference and the head of the department’s national security division, Matthew Olsen, accused Russia of seeking to undermine Biden and Vice President Kamala Harris to bolster Trump’s reelection chances.

In August, the DOJ indicted a Pakistani citizen with ties to Iran for plotting assassination attempts against top political figures, including the former president.