Here's the original article:

Downtown streets closed amid ‘red mercury’ investigation

From Wikipedia:

Red mercury is a substance of uncertain composition purportedly used in the creation of nuclear bombs, as well as a variety of unrelated weapons systems. The existence of such substance has not been documented.

Writer Joseph P. Farrell has already written extensively on the topic of red mercury, most notable in his excellent book The Philospher's Stone: Alchemy and the Secret Research for Exotic Matter.

Apparently stunned by this recent story, Joseph made a video discussing the event, followed by a two-part blog:

Part 1

Part 2