Law enforcement officials are still investigating at least 12 packages containing possible pipe bombs that were part of attempted attacks targeting high-profile Democrats, including two former presidents, three sitting members of Congress and a billionaire philanthropist.

On Friday, the FBI said a further package had been recovered in Florida that was addressed to Democratic Sen. Cory Booker of New Jersey. NYPD confirmed a suspicious package had been found at a Manhattan post office addressed to James Clapper, the former Director of National Intelligence and critic of President Donald Trump, taking the total number of packages to 12.

Many of the packages, which authorities say are being taken seriously and treated as live devices, were addressed to several high-ranking Obama Administration officials, including former President Barack Obama, former Secretary of State Hillary Clinton, former CIA Director John Brennan and former Attorney General Eric Holder. By Thursday morning, the FBI confirmed three more packages had been recovered, including two addressed to former Vice President Joe Biden in Delaware and one addressed to actor Robert De Niro in New York City.