A violent act on New Year’s Day allegedly committed by a tourist highlights rising tensions between the island and the mainland United States.

The Bureau of Alcohol Tobacco and Firearms served a search warrant on quiet Bramblewood Drive in St. Peters Tuesday looking to solve a series of arsons 2,000 miles away. A neighbor recorded video of the ATF after doing a little online sleuthing of her own.

Authorities in Missouri and Puerto Rico are investigating an incident where several businesses on the island were allegedly set on fire by a tourist from Missouri; videos of the alleged event have gone viral.

"I think one of the messages I want to send is, Puerto Ricans wherever we're at, we're here. We're going out to watch out for our people and for Latinos," Velázquez told 5 On Your Side. "Really, the audacity of any tourist to come in,