Another Suspicious Package Ignites at Washington, D.C. Post Office

4:58 p.m. UPDATE: The package which ignited Friday at a Washington, D.C. postal facility looked "similar" to the book-sized envelopes that detonated in Maryland on Thursday, police officials said.

Workers at the V Street postal annex are not allowed to open packages. But the package ignited after another package was thrown on top of it, USPS spokesperson Joanne Veto says.

------------

4:22 p.m. UPDATE: Fox News is reporting that the suspicious incendiary package was addressed to Homeland Security Secretary Janet Napolitano. Additionally, an FBI spokesman has confirmed to WTOP that the package is similar to the two incendiary devices that were opened in Maryland on Thursday.

Postal Service spokesperson Joanne Veto says the suspicious D.C. package was discovered after another package was thrown on top of it. She said the labels, postmark and stamps were similar to the Maryland parcels.

--------------

WTOP in Washington is reporting that at least one package ignited at a D.C. postal distribution facility Friday afternoon. Police say one or two packages ignited at a post office in the 3300 block of V Street, NE shortly after 3 p.m.

There have been no immediate details available as to whether anyone has been injured or how many people were in the facility at the time the package was discovered. The facility has since been evacuated.

“We are working aggressively to determine whether the situation is related or involved to anything else that we’ve been working on in the last two days," Postal Inspection Service spokesman Mike Romano told the Washington Post.

The location screens and handles mail and packages mailed to federal government agencies. It was set up in the wake of the Sept. 11, 2001 terrorist attacks and anthrax scare.

Authorities are taking precautions after a "lone wolf" sent incendiary packages to government buildings in Maryland which ignited and injured two mail workers Thursday.

The Baltimore Sun reported Friday that the suspect behind Thursday's threats was upset about electronic traffic signs which ask motorist to report suspicious activity.

Developing...