(CNN) - A suspicious letter addressed to President Barack Obama intercepted Thursday in the Washington area appears to be connected to possibly poison-laced notes sent to New York Mayor Michael Bloomberg and an anti-illegal-gun group he founded, a law enforcement official said.
The official did not know the status of any testing on anything found in the letter and did not disclose any details about whether there was a message in the letter. The source said the letter appears similar to the notes sent to the mayor and his group, Mayors Against Illegal Guns.