Protesters in Lafayette Park hit with gas for second night in a row: report

A person of interest was arrested in connection with a shooting at a Florida beach boardwalk Monday evening that left nine people with injuries that required hospitalization, authorities said.

It proved to be one of many incidents of gun violence over the holiday weekend. As a result, at least 16 people have died thus far, with dozens injured.

At least 16 people were killed and dozens more injured across the country in Memorial Day weekend shootings, NBC News reports.

The shootings occurred in at least nine states at beaches, high schools and motorcycle rallies among other locations, according to the report.

The early videos from Hollywood, Florida's mass shooting show a terrified public race from the sound of the gunfire, and online cameras on the boardwalk show. CBS News reported at least 7 people have been shot, including a 15-year-old.

"Residents and visitors: Please avoid the area of Johnson to Garfield Streets, as well as the Hollywood Broadwalk, due to an ongoing shooting investigation. Heavy police presence in the area. If you are looking to reunite with a family member, we have set up a reunification area at Johnson Street and N Ocean bus loop," the Hollywood Beach Police Department posted on their Facebook page shortly before 7 p.m. ET. As of 7:36 p.m. EST, police were still advising the public that there was an "ongoing situation." The Daily Beast reported that the first shots fired were heard outside Nicks Bar & Grill around 7 p.m. local time.