Police in Washington are looking into how a local resident who ordered a color TV set via Amazon.com ended up with a high-powered semi-automatic assault rifle instead.

Seth Horvitz, who lives in the northeast quadrant of the US capital, said he contacted police immediately after a parcel delivery service left the military-style SIG Sauer SIG716 at his apartment door.

“They were a little confused at first. They’ve never seen anything quite like it,” he told Fox 5, a local television station.

“They just took my information and then said: ‘We’ll handle this weapon because it’s illegal to keep here.’ It’s illegal to transport in a car, so it can’t be returned.”

While the box was addressed to Horvitz, who had ordered a flat-screen television from a third-party retailer via Amazon.com, an invoice inside the box suggested the gun was supposed to go to a Pennsylvania gun shop.