Who is James Yoo? Man Linked to Virginia House Explosion

After a massive explosion leveled a home in a huge fireball during a police standoff, attention has now turned to the man who lived there—and his disturbing social media posts.

Officers were called to the duplex in Arlington, Virginia, around 4:45 p.m. on Monday following reports that shots from a flare gun had been repeatedly fired from the property. Investigators obtained a search warrant, but more shots were fired from inside the property as officers prepared to enter it and the building exploded shortly before 8:30 p.m.

The force of the explosion in the 800 block…