Gunman opens fire during St. Patrick's Day celebrations, killing 1

One or more gunmen opened fire in the bar district of Jacksonville Beach, Florida on St. Patrick's Day, killing one person and injuring three others.

Multiple shootings happened within a few hours, and police evacuated all the bars and put them on lockdown for several hours.

No suspects were in custody Monday, and police are still looking for the shooter or shooters.

Jacksonville Beach Mayor Christine Hoffman said the violence was due to several "potentially unrelated" incidents.

In addition to St. Patrick's Day, it is Spring Break season on Florida beaches.

Many areas got additional security for the duration of spring break, but Jacksonville Beach was not one of them.