Two "improvised explosive devices" made from "novelty-type grenades" have exploded in front of the building that houses the British Consulate in New York City, police said.

The blasts early Thursday morning shattered windows but did not cause significant damage or injuries, the New York Police Department said.

The devices, which contained black gunpowder and fuses, blew out a chunk of concrete in the flower box where they were planted outside the building....

--CNN

Disturbing.

Though it occurs to me we could solve this one a hell of a lot faster if the NRA didn't oppose mandatory taggants in gunpowder.