Explosive Device Found in Mailbox at George Soros’s Westchester County Home

An explosive device was found on Monday in a mailbox at the Westchester County home of George Soros, the billionaire philanthropist who is a favorite target of right-wing groups, the authorities said.

A law enforcement official confirmed that the device was found near Mr. Soros’s home. It did not explode on its own, and bomb squad technicians “proactively detonated” it, the official said.

Federal and state law enforcement officials responded to the scene in Katonah, N.Y., a hamlet in the upscale town of Bedford in northern Westchester, after the Bedford Police Department received a call about a suspicious package at about 3:45 p.m.

“An employee of the residence opened the package, revealing what appeared to be an explosive device,” the police said in a statement. “The employee placed the package in a wooded area and called the Bedford police.”