1 dead, 3 injured in St. Patrick's Day shootings in Jacksonville Beach. Here's what we know

Bars and restaurants were shut down on one of their busiest nights of the year after one person was killed and three more injured in three different shootings in Jacksonville Beach's bar district during St. Patrick's Day celebrations, according to the Jacksonville Beach Police Department.

Police responded to what they called an active shooter threat among crowds of holiday revelers and spring breakers that occurred at around 8:30 p.m. Sunday. Local bars and restaurants were told to lock down and residents were urged to shelter in place just after 9 p.m., according to a Facebook post from the JBPD. The restrictions have since been lifted.

Officers were already on the scene due to reports earlier in the week that a large number of teens were going to be meeting up in the area.

"Anywhere from 250 to 400 juveniles in their late teens arrived at that location," JBPD Chief Gene Paul Smith said in a Monday morning press conference.

Here's what we know.

Who was shot in Jacksonville Beach?

Four people were shot, Smith said. One victim was pronounced dead and three others are in serious but stable condition, he said.

Was there a mass shooting in Jacksonville Beach?

No, they are believed at the time to be separate incidents. "We believe they are unrelated," Smith said.

How many people were shot in Jacksonville Beach?

• 7:50 p.m.: Two people shot at each other near the Best Western Oceanfront hotel, Smith said, and also struck an innocent bystander. All three are in serious but stable condition.
• 8:13 p.m.: An armed man was seen running north through the Ritz parking lot on 3rd Avenue and firing a weapon, along with a woman. No one was injured. A pistol was recovered at the scene, Smith said.
• 8:31 p.m.: A 21-year-old man was killed in a shooting behind Sneakers Sports Grille by Beach Blvd. Three suspects had firearms, witnesses said, but only one fired.

Response was immediate as 60-70 officers were already on the scene for crowd control, Smith said. "We had no officer-involved shootings last night," he told the press.

Have any of the victims been identified in the St. Patrick's Day shooting?

The Police Department on Tuesday identified the man who was killed as James Jones III, but no other details about him or the others were released.

Where did the Jacksonville Beach shootings happen?

The shootings occurred in the bar district in Jacksonville Beach between 2nd Ave, and Beach Blvd. First Coast News reported seeing police near 2nd Avenue's beach access area.

Was anyone arrested in the Jacksonville Beach shootings?

"We have not made any arrests at this point," Smith said.

Anyone with information about the case should call police at (904) 270-1661.

When is spring break and when does it end?

Spring break in U.S. colleges and universities runs from the beginning of March into April, with each school running on its own schedule. It peaks in mid-March.

There are no Florida colleges or universities ion break in April, although a few high schools have April spring breaks.