WASHINGTON (Reuters) - The FBI is investigating a U.S. postal facility in New Castle, Delaware, amid the ongoing investigation into a series of package bombs sent to prominent American politicians and others this week, MSNBC reported on Thursday.
On Wednesday, a federal official said U.S. investigators were searching for a suspicious package they believe was addressed to former Vice President Joe Biden.
(Reporting by Susan Heavey and Makini Brice)
