MIAMI, Fla. -

Miami city leaders are urging residents not to add celebratory gunfire to their Fourth of July fireworks.

Mayor Tomas Regalado, Miami Police Chief Manuel Orosa ,and other city officials held a news conference to ask people to abandon the unofficial tradition of firing guns into the air to celebrate the holiday.

It's the same plea they made just before New Year's Eve.

When the bullets fall back to earth, they sometimes strike innocent bystanders.

A 12-year-old boy watching fireworks outside his Ruskin home was critically injured when a bullet falling from the sky pierced his skull just after midnight on New Year's Eve.

His family on Wednesday told The Tampa Tribune that he still suffers from short-term memory loss.

No arrests have been made in his shooting.