Police say there was another bomb package - here's who it was addressed to

According to law enforcement officials, they are frantically searching for a package that matches the description of the bombs that were sent to politicians and media figures Wednesday — and it was addressed to former Vice President Joe Biden.

The packages were sent to former Presidents Bill Clinton, Barack Obama, former U.S. Attorney General Eric Holder, and left-wing billionaire financier George Soros, but none of the explosives were set off, and no one was hurt.

Late Wednesday evening, CNN reported that another package was being sought by law enforcement that fit the pattern of the bombing attempts.

"Law enforcement officials tracking down package addressed to former Vice President Joe Biden, considered suspicious because of similarities to other packages, two law enforcement sources tell CNN," reported Jim Sciutto of CNN.

The package was apparently addressed incorrectly, and was sent instead to the return address provided on the manila envelope.

This fits the pattern of incorrectly addressed envelopes — the same occurred with the bomb device sent to Eric Holder, and it was sent to the offices of Rep. Debbie Wasserman Schultz (D-Fla.). Her offices were evacuated when the packages were discovered.

Law enforcement officials are not commenting on the possible motivation of the person who sent the explosive packages, but some in the media are suggesting that the targets imply that the culprit was a supporter of the president. Others theorize the packages were meant to elicit sympathy for Democrats ahead of the midterm elections.